Electronic residual current protection relay with built-in 28 mm transformer, forming a single unit. Super-immunised type-A, with high-frequency current filtering and high immunity. True root mean square (TRMS) measurement.

Features:

• Modules: 3
• Pre-alarm relay: Yes
• Useful diam.(mm): 28
• Nº relays: 1
• IΔn (A): 0,03 … 3 A | 0,03 …30 A
• Power supply (Vac): 230 Vac
• Delay: 0,02 … 10 s, INS, SEL
• Mounting: DIN rail

Suitable Applications:

• WRU-10 relays enable smart differential protection. Their design features guarantee maximum security and electrical service continuity, avoiding unwanted tripping.
• Viewing the instantaneous leakage value on the display, together with the pre-alarm indicators, makes it possible to obtain information on the status of lines to be protected, and to perform adequate preventive maintenance.