The Schneider Electric A9C20842 Acti 9 40A 230V IP20 Double Pole 2P Clip on 2NO Normally Open Contactor can improve the service life of high current electrical systems. The device safely switches circuits on and off to prevent damage to components and improve overall efficiency. This is a lightweight safety device which simply clips onto the din rail making installation simple. Rugged design allows for repeated used within the circuit while receiving no excessive wear and tear on the contactor. Fast switching capacity reacts almost instantly to current changes. Super quiet operation, producing only 30dB of noise. Large circuit labelling area for fast visual identification of contacts. It has an ingress protection rating of IP20. It has a large operating temperature range of -5 degrees Celsius to +60 degrees Celsius makes it perfect for a range of environments. Perfect for use in lighting systems, controls systems, heating, and cooling systems. You can rely on this contactor for a long service time, it can switch an electrical current on/off up to 100 times a day with a mechanical durability of 1,000,000 cycles. Product dimensions: (W) 85mm x (H) 36mm x (D) 60mm. This product is compliant with IEC/EN 61095.