EMC Suppressors

Effective EMC Suppressors for Industrial Interference Protection

Switching inductive loads such as motors, solenoids, and lighting systems can generate voltage spikes that negatively impact nearby electronic components. EMC suppressors, also known as contact suppression modules, are designed to mitigate these surges, improving the electromagnetic compatibility (EMC) of your control system and extending the lifespan of connected devices. According to EMC standards and directives, suppressors should be placed as close as possible to the source of interference for maximum efficiency. Murrelektronik offers a full range of suppression modules, along with suitable grounding accessories, available for convenient online purchase.

Prolong Equipment Life with Reliable Contact Suppression

Common use cases for EMC suppression modules include:

• Motor protection through EMC suppression
• Voltage spike suppression in switching devices
• Interference reduction for valve actuation systems

EMC Suppressors for Motors, Switching Devices, and Valves

Murrelektronik’s product portfolio includes a wide selection of EMC suppression solutions tailored to industrial needs. Here are several featured examples:

EMC Suppression Modules for Motors

The Motor Suppression Module (23000) is designed for systems operating at 3 x 500 V AC (+10%). It features a flame-retardant plastic housing (UL 94 rated) and is equipped with 1.5 mm² single-core wires and M4 self-locking fork terminals.
Another option, the Motor Suppression Module (23001), offers reliable performance in temperature ranges from -20°C to +60°C. It uses a dual-component potting compound to ensure robust encapsulation and long-term durability in harsh environments.

EMC Suppression for Switching Devices

Murrelektronik’s Moeller Suppression Module (21028) offers a damping factor of approximately 1.5 x UN and compact dimensions (37×38×11 mm). It is suitable for 110 V or 230 V AC/DC systems.
Similarly, the Allen-Bradley Suppression Module (21143) provides interference suppression for switching devices operating at 230 V AC/DC, and also delivers a damping performance of around 1.5 x UN.

EMC Suppressors for Valves

The Valve Suppression Module Type A – 18 mm (3124015) delivers up to 50 W (VA) of holding power. Its housing is constructed from flame-retardant black polyamide with heat resistance up to 130°C, and it features silver-plated bronze contacts.
For more compact setups, the Valve Suppression Module Type BI – 11 mm, 90° (3124163) offers a drop-out delay of up to 20 ms and a clamping voltage of 300 V max. Both options are engineered for reliable performance in demanding automation environments.

Buy EMC suppressors from Murrelektronik today at shop.murrelektronik.de.