Type 3 surge protective devices from ABB are combination protective devices that are Type 2 and Type 3 tested. Due to their low protection level, OVR T2+3 is the ideal protective device for particularly sensitive equipment. They are used as the second or third protection level in sub-distribution boards or as close as possible to the equipment. The protective devices are available for all mains forms and for mains voltages of 230 V/400 V and 400 V/690 V.
Main benefits
- Extremely low level of protection voltage value that is suitable for all sensitive terminal equipment
- Good value of Imax 20kA
- Common and differential mode of protection
Main features
- Imax 20kA
- Up 900V
- Uc 275V and 440V