Eaton, SD Surge Suppressor Unit 22 V ac, 32 V dc Maximum Voltage Rating 20kA Maximum Surge Current Surge Protection

Ultra-slim devices for protecting electronic equipment against surges on control loop cabling.

Full hybrid surge protection to BS6651 (category C)
Ultra-slim 7mm module, DIN-rail mounting and earthing
Protection for 4-20mA loops
Auto-reset

Use this surge suppressor unit from Eaton's MTL range to protect your equipment against voltage spikes caused by events like lightning strikes or fuses blowing. It blocks or diverts power surges to the ground to safeguard equipment on signal and I/O (input/output) cabling. A multi-stage hybrid protection circuit combines solid-state electronics and a GDT (gas-filled discharge tube) to provide low-line resistance and surge protection of up to 20kA. At just 7mm long, this item takes up minimal space. You can use it in your distribution boards and lighting systems.

• An auto-reset function establishes a normal power supply once the voltage spike has been resolved
• Versatile unit is flexible and suitable for high-bandwidth and low-resistance applications
• Very high packing density allows modules to double up as feedback terminals, providing full protection for two to three wire loops

This surge suppressor can be quickly mounted on a DIN rail. This saves you space and makes it easy to access for maintenance.

Yes. This unit can operate at temperatures between -40°C and +80°C, meaning you can use it in harsh conditions.

Eaton formerly known as MTL

Surge Protection Devices, SPDs (DIN-rail)

Voltage surges, often referred to as spikes or transients are typically caused by switching of fluorescent lights, fuses blowing or nearby lightning activity. The worst voltage surges are usually caused by lightning and can reach up to 6000V, with current surges of over 3000A. The maximum size of the voltage and current surges depends on the location within the building's wiring system. BS7671: 2011 Amendment 1 Sections 443 and 534 cover risk assessment and provides guidance on protection of electronic equipment for installation engineers to follow. The fullest information on lightning and surge protection comes from the BSEN 62305 series of standards.