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CSM100
Capacitor Switching Module

Combination of Power and Performance — Safe, fast and strong.

Forte Powerflex CSM thyristor modules are robust and durable products available in a wide power range from 12.5 kVAr to 100 kVAr at 400V and 690V voltage levels.

3 ms Response Time Up to 690V Up to 100 kVAr Microprocessor Controlled Thermistor Protected 24VDC Auxiliary
3 ms Switching Speed
400V & 690V Operation
Microprocessor Controlled
Over Temperature Safety
Fault Code Notification
3 ms
Response Time
More precise control, faster switching
690V
Maximum Voltage
Wide voltage range support
100 kVAr
Maximum Power
(at 400V)
Passive Power Quality

Thyristor switching with
3 ms response time

The CSM series delivers rapid, precise capacitor switching for reactive power compensation systems. With microprocessor control and thermistor protection, CSM modules ensure safe and reliable operation across demanding industrial environments.

Available in three frame sizes (CSM50, CSM75, CSM100), the series covers power ratings from 50 kVAr to 100 kVAr at 400V, with full support for 525V, 600V, 690V and 750V systems.

Controlled fan support, over-temperature safety and fault code notification via LED indicators make installation, commissioning and maintenance straightforward.

400V – 750V 3 ms Response Thermistor Protected 24VDC Auxiliary LED Status Display Programmable Fan
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CSM100 Thyristor Module — Front View
CSM100 Thyristor Module — Side View
CSM100 Thyristor Module — Detail View
Key Features

What Makes CSM the Right Choice

Robust thyristor switching with microprocessor intelligence, built for the demands of industrial reactive power compensation.

Microprocessor Controlled

Intelligent microprocessor management ensures precise timing, reliable switching and seamless integration with reactive power compensation controllers.

Controlled Fan Support

Programmable fan control lets you set the temperature threshold for activation and deactivation, optimising cooling efficiency and extending component life.

Over Temperature Safety

Built-in thermal protection continuously monitors module temperature and triggers automatic shutdown before critical thresholds are reached, safeguarding thyristors and connected equipment.

Supply Voltage Measurement

Real-time monitoring of supply voltage ensures the module operates within safe limits and provides early warning of abnormal grid conditions.

Fault Code Notification

Diagnostic fault codes enable rapid identification of issues during commissioning and operation, reducing downtime and simplifying maintenance workflows.

Up to 690 Volts

Native support for 400V, 525V, 600V, 690V and 750V voltage levels covers the full range of industrial distribution systems without external step-down transformers.

Thermistor Protected

NTC thermistors provide the most precise temperature measurements. With fast response time, they are the ideal solution in variable temperature environments for reliable thermal monitoring.

Technical Specifications

CSM Series — Full Specification

Complete technical parameters for all three CSM frame sizes. All models share the same control architecture and monitoring features.

Specification CSM50 CSM75 CSM100
Dimensions (w × d × h)156 × 190 × 220 mm156 × 218 × 220 mm156 × 243 × 220 mm
Weight5.1 kg5.7 kg6.3 kg
Voltage400V / 525V / 600V / 690V / 750V400V / 525V / 600V / 690V / 750V400V / 525V / 600V / 690V / 750V
Maximum Overvoltage+10%+10%+10%
Frequency50 Hz50 Hz50 Hz
Max. Power50 kVAr (@400V)75 kVAr (@400V)100 kVAr (@400V)
Max. RMS Current75 A110 A145 A
Frame SizeFSAFSBFSC
Auxiliary Supply24VDC24VDC24VDC
Start SignalVia external potential free contact
MonitoringVoltage, temperature and operation status via LEDs; Potential free contact (output) for alarm
Display3 LEDs — RED: phase voltage / YELLOW: triggering signal / GREEN: ready
Power CircuitDirect connection 4-pole via bus bar cable lug 50 mm², connection from bottom
Power Dissipation (145A module)PL (W) = 145 (in A); at 400V / 100 kVAr ≈ 300 W
Diagnostics

Alarm Codes & LED Indicators

CSM modules communicate fault conditions through LED blink patterns, enabling rapid on-site diagnosis without additional tools.

CodeDescriptionLEDBlink RateCauseSolution
A01Mains Power FailureRed1 Hz (0.5s ON / 0.5s OFF)No mains voltage detected on input phasesCheck mains supply, verify fuses and circuit breakers
A02NTC Sensor BrokenAll LEDs1 Hz (0.5s ON / 0.5s OFF)NTC temperature sensor open circuit or disconnectedCheck NTC sensor wiring and connector, replace sensor if defective
A03Cooler OvertemperatureRed & Green2 Hz (0.25s ON / 0.25s OFF)Heatsink temperature exceeded 80°CCheck fan operation, clean heatsink, reduce load, ensure adequate ventilation
A04Reactor OvertemperatureRed & Green1 Hz (0.5s ON / 0.5s OFF)Reactor thermal switch triggered due to overheatingCheck reactor ventilation, reduce load, verify reactor thermal switch
A0524VDC Supply FaultGreen1 Hz (0.5s ON / 0.5s OFF)Control supply voltage dropped below 21.5VCheck 24VDC power supply, verify input voltage and wiring

Ready to specify CSM for your project?

Our engineering team will help you select the correct frame size and voltage configuration based on your facility's reactive power requirements — at no cost before commitment.

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