Low Voltage Load Banks

Product

Load Banks

Product

Load Banks

Low Voltage Load Banks

A compact, high-performance 100kW resistive load bank designed for generator testing, field commissioning, and mobile power validation.

A compact 250kW resistive load bank designed for rapid generator testing, commissioning, and preventative maintenance across industrial and commercial sites.

These 300kW and 400kW low voltage resistive load banks are engineered for rapid deployment, generator testing, and mobile operations.

These 500kW and 600kW resistive low voltage load banks are engineered for rapid deployment, generator testing, and mobile operations.

This 800kW resistive low voltage load bank is engineered for rapid deployment, generator testing, and mobile operations.

These 1,000kW, 1,250kW and 1,500kW low voltage resistive load banks are engineered for rapid deployment, generator testing, and mobile operations.

Type

100kW Portable Load Bank
250kW Portable Load Bank
300kW/400kW Portable Load Bank
500kW/600kW Portable Load Bank
800kW Load Bank
1,000kW/1,250kW/1,500kW Load Bank

A compact, high-performance 100kW resistive load bank designed for generator testing, field commissioning, and mobile power validation.

A compact 250kW resistive load bank designed for rapid generator testing, commissioning, and preventative maintenance across industrial and commercial sites.

These 300kW and 400kW low voltage resistive load banks are engineered for rapid deployment, generator testing, and mobile operations.

These 500kW and 600kW resistive low voltage load banks are engineered for rapid deployment, generator testing, and mobile operations.

This 800kW resistive low voltage load bank is engineered for rapid deployment, generator testing, and mobile operations.

These 1,000kW, 1,250kW and 1,500kW low voltage resistive load banks are engineered for rapid deployment, generator testing, and mobile operations.

Type

100kW Portable Load Bank
250kW Portable Load Bank
300kW/400kW Portable Load Bank
500kW/600kW Portable Load Bank
800kW Load Bank
1,000kW/1,250kW/1,500kW Load Bank

Model: 100kW Portable Load Bank

Type: 100kW Portable Load Bank

Brand: Fortress

Model: X100

Voltage: Configurable (Australian 415V standard available)

Resolution Steps: 2kW

Form Factor: Portable, suitcase-style design

IP Rating – Controls: IP40

IP Rating – Main Unit: IP20

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Optional (MURC compatible)

Weight: ~32kg

Model: 250kW Portable Load Bank

Type: 250kW Load Bank

Brand: Fortress

Model: X250

Resolution Steps: 5kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40

IP Rating – Main Unit: IP20

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard (MURC compatible)

Generator Load Sensing: Standard

Form Factor: Portable or fixed installation (630mm width)

Model: 300kW/400kW Portable Load Bank

Type: 300kW / 400kW Load Bank

Brand: Fortress

Model: XL300 / XL400

Resolution Step: 5kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40 standard (IP54 with outdoor kit)

IP Rating – Main Unit: IP21 standard (IP22 with outdoor kit)

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard (MURC compatible)

Generator Load Sensing: Standard

Model: 500kW/600kW Portable Load Bank

Type: 500kW / 600kW Load Bank

Brand: Fortress

Model: XL500 / XL600

Resolution Step: 5kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40 standard (IP54 with outdoor kit)

IP Rating – Main Unit: IP21 standard (IP22 with outdoor kit)

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard (MURC compatible)

Generator Load Sensing: Standard

Model: 800kW Load Bank

Type: 800kW Load Bank

Brand: Fortress

Model: XL800

Resolution Step: 5kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40 standard (IP54 with outdoor kit)

IP Rating – Main Unit: IP21 standard (IP22 with outdoor kit)

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard (MURC compatible)

Generator Load Sensing: Standard

Model: 1,000kW/1,250kW/1,500kW Load Bank

Type: 1,000kW / 1,250kW / 1,500kW Load Bank

Brand: Fortress

Model: XL1000 / XL1250 / XL1500

Resolution Step: 25kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40 standard (IP54 with outdoor kit)

IP Rating – Main Unit: IP21 standard (IP22 with outdoor kit)

Materials: Powder coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard

Generator Loading Sensing: Standard

Specification

100kW Portable Load Bank

250kW Portable Load Bank

300kW/400kW Portable Load Bank

500kW/600kW Portable Load Bank

800kW Load Bank

1,000kW/1,250kW/1,500kW Load Bank

Model: 100kW Portable Load Bank

Type: 100kW Portable Load Bank

Brand: Fortress

Model: X100

Voltage: Configurable (Australian 415V standard available)

Resolution Steps: 2kW

Form Factor: Portable, suitcase-style design

IP Rating – Controls: IP40

IP Rating – Main Unit: IP20

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Optional (MURC compatible)

Weight: ~32kg

Model: 250kW Portable Load Bank

Type: 250kW Load Bank

Brand: Fortress

Model: X250

Resolution Steps: 5kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40

IP Rating – Main Unit: IP20

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard (MURC compatible)

Generator Load Sensing: Standard

Form Factor: Portable or fixed installation (630mm width)

Model: 300kW/400kW Portable Load Bank

Type: 300kW / 400kW Load Bank

Brand: Fortress

Model: XL300 / XL400

Resolution Step: 5kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40 standard (IP54 with outdoor kit)

IP Rating – Main Unit: IP21 standard (IP22 with outdoor kit)

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard (MURC compatible)

Generator Load Sensing: Standard

Model: 500kW/600kW Portable Load Bank

Type: 500kW / 600kW Load Bank

Brand: Fortress

Model: XL500 / XL600

Resolution Step: 5kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40 standard (IP54 with outdoor kit)

IP Rating – Main Unit: IP21 standard (IP22 with outdoor kit)

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard (MURC compatible)

Generator Load Sensing: Standard

Model: 800kW Load Bank

Type: 800kW Load Bank

Brand: Fortress

Model: XL800

Resolution Step: 5kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40 standard (IP54 with outdoor kit)

IP Rating – Main Unit: IP21 standard (IP22 with outdoor kit)

Materials: Powder-coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard (MURC compatible)

Generator Load Sensing: Standard

Model: 1,000kW/1,250kW/1,500kW Load Bank

Type: 1,000kW / 1,250kW / 1,500kW Load Bank

Brand: Fortress

Model: XL1000 / XL1250 / XL1500

Resolution Step: 25kW

Voltage: Configurable (Australian 415V standard available)

IP Rating – Controls: IP40 standard (IP54 with outdoor kit)

IP Rating – Main Unit: IP21 standard (IP22 with outdoor kit)

Materials: Powder coated galvanised steel enclosure

Cooling: High-speed fans

Multi-Unit Remote Control: Standard

Generator Loading Sensing: Standard

Details

Use Case: Generator Low-Load Management

When generators run underloaded – typically below 30–40% capacity – performance deteriorates and engine glazing becomes a risk. The X100 provides a precise artificial load to maintain healthy generator operation, enabling safer commissioning and more consistent post-maintenance testing.

Standard X100 Load Bank

The X100 is Fortress Systems’ most compact and portable low-voltage load bank. Housed in a rugged hard-shell case, it delivers 100kW of resistive load with 2kW step resolution. Designed for mobile operators and field teams, it supports rapid deployment and simple manual control, making it ideal for UPS validation, generator testing, or battery discharge scenarios.

X100 Options

The X100 can be supplied with or without Fortress’ Multi Unit Remote Controller (MURC) integration. Multiple units can be networked to simulate larger load conditions or coordinate field-wide test programs.

Use Case: Generator Low-Load Management

The X250 is built to solve the problem of generator underloading, which can lead to inefficient operation and engine glazing. By applying precise artificial load, it helps maintain healthy performance and ensures controlled commissioning, regular validation, or UPS and battery system testing.

Standard X250 Load Bank

Delivering 250kW of resistive load in a compact footprint, the X250 is available in both portable and fixed configurations. The portable version includes rugged transport features, while fixed units are designed for direct integration into test environments or facilities.

X250 Options

GLS and MURC come standard in the Fortress Units.

The factory options available are the Outdoor Kit, lifting bar and Mobility Kit (i.e. casters).

Use Case: Generator Low-Load Management

When generators run below optimal load, engine glazing and reduced lifespan can occur. The XL300 and XL400 apply precise artificial load to support healthy generator performance. They are particularly effective in commissioning, maintenance, and simulated load environments.

Standard XL300 / XL400 Load Banks

Both models are available in portable or fixed configurations, delivering either 300kW or 400kW of resistive load. Designed for tight access and rugged conditions, the XL series offers simple control, efficient cooling, and field-tested reliability for diverse applications including UPS, battery, or facility-level load testing.

XL300 / XL400 Options

GLS and MURC come standard in the Fortress Units.

The factory options available are the Outdoor Kit and Mobility Kit (ie. casters). Trailer mounting is available on inquiry.

Use Case: Generator Low-Load Management

When generators are run below optimal capacity, performance degrades and engine glazing becomes a risk. The XL500 and XL600 models provide precise artificial load application to support safe, efficient generator operation during commissioning, load testing, or scheduled servicing.

Standard XL500 / XL600 Load Banks

Delivering either 500kW or 600kW of resistive load, the XL500 and XL600 can be deployed as portable or fixed installations. These units are designed for high-output sites needing reliable load control in confined or rugged conditions.

XL500 / XL600 Options

Optional upgrades include an outdoor IP rating kit and trailer-mounted configurations for improved mobility.

GLS and MURC come standard in the Fortress Units.

The factory options available are the Outdoor Kit and Mobility Kit (ie. casters). Trailer mounting is available on inquiry.

Use Case: Generator Low-Load Management

When generators operate below optimal load levels, engine wear and glazing can occur. The XL800 applies precise resistive load to protect performance and extend generator life. It’s commonly used during commissioning and preventative maintenance.

Standard XL800 Load Bank

Delivering 800kW of resistive load, the XL800 can be deployed as a portable or fixed unit. For fixed installations, direct busbar connection is available. For mobile use, PowerLock-style connectors are fitted. The rugged frame and intuitive controls support quick on-site deployment.

XL800 Options

Available options include trailer mounting for mobility and an outdoor kit that enhances IP ratings.

GLS and MURC come standard in the Fortress Units.

The only options available are the Outdoor Kit and Mobility Kit. Trailer mounting is available on inquiry.

Use Case: Generator Low-Load Management

When generators operate below 30–40% of capacity, performance deteriorates—often leading to engine glazing. The XL1000, XL1250 and XL1500 load banks introduce a precise artificial load to ensure safe, sustained generator operation. They also enable repeatable, accurate test scenarios during generator commissioning or post-servicing.

Standard XL1000 / XL1250 / XL1500 Load Banks

Each unit delivers a high-capacity resistive load in either portable or fixed configurations. Portable models include external PowerLock connectors, while fixed installations are wired internally. Designed for field testing of large generators, batteries and UPS systems, these load banks combine rugged construction with Fortress’ proven control interface.

XL1000 / XL1250 / XL1500 Options

Available options include trailer mounting for mobility and an outdoor kit that enhances IP ratings.

GLS and MURC come standard in the Fortress Units.

The only options available are the Outdoor Kit and Mobility Kit. Trailer mounting is available on inquiry.

We’re here to answer all your questions

Got questions? We’ve got answers! Below are some of the most common inquiries about our products and services. If you don’t find what you’re looking for, feel free to reach out to our team—we’re happy to help!

Can the X100 be remote controlled?

Yes. All Fortress portable load banks are MURC-compatible and can be networked with up to 200 units using a single controller.

What cable lengths are available?

We supply standard 5m, 10m, and 15m cable/connector sets. Custom lengths are available on request.

What’s the resolution of load steps?

The X100 operates in 2kW load steps as standard.

Where are Fortress load banks manufactured?

X100 units are designed in the USA and manufactured by our Telema Group facility in China. US-manufactured supply is available if required.

Does the X100 support GLS integration?

Not currently. GLS functionality is on the product roadmap—speak to our team to discuss your application.

What information do I need to get a quote?

Just let us know how many X100 units you need and we’ll handle the rest. You can also download the product datasheet for technical reference.

Can the X250 be remote controlled?

Yes. The X250 supports Fortress’ MURC system for managing up to 200 connected load banks.

What cable configurations are available?

We supply 5m, 10m, and 15m cable/connector sets as standard. Portable models use PowerLock-style connectors; fixed units are wired to a busbar.

What is the step resolution?

The X250 adjusts in 5kW increments.

Where is the unit manufactured?

Fortress LV load banks are designed in the USA and typically built at our Telema Group facility in China. USA-made supply is available on request.

What does the GLS system do?

The GLS (Generator Loading System) enables automatic control of generator load by dynamically applying artificial load to maintain stable performance.

What information is needed for a quote?

Let us know your application and how many units you need. You can also download our product datasheet for reference before speaking with our team.

Can the XL300 / XL400 be remote controlled?

Yes – Fortress load banks support the MURC system for managing up to 200 connected units.

What cable sets are available?

We offer 5m, 10m, and 15m standard cable/connector sets. Portable units use PowerLock connectors; fixed units are configured for direct busbar connection.

What is the step resolution?

Both models operate in 5kW increments.

Where are the load banks built?

Designed in the USA, Fortress low voltage load banks are manufactured at our Telema Group facility in China. USA-built units are available by request.

What does GLS functionality provide?

The GLS system enables automatic load adjustment to maintain generator performance within safe, efficient thresholds.

What information do I need to get a quote?

Just let us know your application and required quantity. You can also download the product datasheet before contacting our team.

Can the XL500 / XL600 be remote controlled?

Yes – these units support Fortress’ MURC system for synchronised control of up to 200 load banks.

What cable sets are available?

Standard cable sets are available in 5m, 10m, or 15m lengths, with custom options on request. Portable units use PowerLock connectors; fixed units are wired to the busbar.

What is the step resolution?

Both models operate in 5kW load increments.

Where are the units built?

Fortress low voltage load banks are designed in the USA and manufactured by our Telema Group facility in China. USA-built options are available.

What does the GLS system provide?

GLS enables dynamic load balancing by automatically adjusting artificial load to maintain optimal generator performance.

What information do I need to get a quote?

Very little – simply tell us your application and quantity required. For more detail, download the product datasheet or contact our team.

Can the XL800 be remote controlled?

Yes – the XL800 is MURC-compatible, supporting control of up to 200 Fortress load banks.

What cable configurations are supported?

PowerLock connectors are standard for portable models; direct terminal connection is used for fixed setups. Standard cable lengths include 5, 10, or 15m.

What is the resolution step size?

5kW increments.

Where is the XL800 manufactured?

Designed in the USA and built by Fortress’ Telema Group facility in China. USA-based production is available if required.

What does the GLS system do?

It automates load management by adjusting the load based on real-time generator output.

What information do I need for a quote?

Only the application and unit quantity are required. For tailored recommendations, download the datasheet or contact our team.

Can these load banks be networked and remote controlled?

Yes – all Fortress low voltage air-cooled load banks are compatible with our MURC (Multi Unit Remote Controller) system and support up to 200 connected units.

What standard cable lengths are available?

Cable and connector kits are available in 5, 10, or 15m lengths. Custom options are available upon request. Portable units use PowerLock connectors; fixed units are designed for busbar integration.

What are the resolution steps?

The XL1000, XL1250 and XL1500 each feature 25kW resolution steps as standard.

Where are Fortress load banks manufactured?

All standard low voltage Fortress load banks are designed in the USA and manufactured at our Telema Group facility in China. Supply from the USA is also available on request.

What does the GLS (Generator Loading System) do?

GLS allows fast connection and automated control of the generator’s load through the load bank. It ensures consistent performance and prevents underloading in real time.

What information do I need to get a quote?

Minimal – we recommend downloading the product datasheet and contacting us to discuss your application and quantity requirements.

Low Voltage Load Banks

Type

Low Voltage Load Banks

Type

Model: 100kW Portable Load Bank

Model: 250kW Portable Load Bank

Model: 300kW/400kW Portable Load Bank

Model: 500kW/600kW Portable Load Bank

Model: 800kW Load Bank

Model: 1,000kW/1,250kW/1,500kW Load Bank

Specification

Model: 100kW Portable Load Bank

Model: 250kW Portable Load Bank

Model: 300kW/400kW Portable Load Bank

Model: 500kW/600kW Portable Load Bank

Model: 800kW Load Bank

Model: 1,000kW/1,250kW/1,500kW Load Bank

Details

We’re here to answer all your questions

Contact Our Technical Team

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