Motor protection switch Noark Ex9S32A 0.4 A 400–690 V IP20 (MPN 108098)

The Noark Ex9S32A motor protection switch with adjustable trip current of 0.4 A and rated voltage range 400–690 V is a compact protective device intended for safeguarding electric motors against overload and phase failure. Its modular form factor and IP20 degree of protection make it suitable for installation in control panels, motor starters and industrial machinery where space efficiency and reliable motor protection are required.

Advantages

The switch offers adjustable thermal-magnetic protection tailored to a 0.4 A trip setting, providing repeatable overload tripping and reliable discrimination in combination with upstream protective devices. Its compact design reduces panel space usage while the IP20 enclosure protects live parts from casual contact. The construction supports straightforward wiring and integration into existing motor control circuits, and the device is compatible with standard mounting systems used in commercial and light-industrial installations.

Suitable for

• Protection of small three-phase and single-phase motors in control panels
• Motor starter assemblies in light-industrial and commercial equipment
• Replacement or retrofit in machinery with a rated supply of 400–690 V

Key specifications

• Adjustable trip current: 0.4 A
• Rated operational voltage range: 400–690 V
• Protection degree: IP20
• Function: motor overload and phase-failure protection
• Modular compact form factor suitable for DIN-rail or panel mounting

How to use

Install the motor protection switch in the control panel according to the electrical schematic and local wiring regulations. Ensure the device is mounted on the appropriate rail or panel space and that supply power is disconnected before wiring. Connect supply and load conductors to the designated terminals and set the trip current to 0.4 A if adjustable on the device. Verify coordination with upstream breakers or fuses and perform function checks by simulating overload conditions or using manufacturer-recommended test procedures. After commissioning, monitor motor operation to confirm correct tripping and reset behaviour.

Lietojuma ieteikumi

Use appropriate cable sizes, torque settings and protective devices in the panel to ensure correct performance. Regularly inspect terminals for tightness and check the device for signs of wear or damage; replace the switch if mechanical or electrical faults are detected. Follow local standards for electrical safety and maintenance intervals to maintain reliable motor protection.