The Schneider Electric M9R84225 is a two-pole residual current circuit breaker (RCCB) from the Multi9 GFP family, developed for distribution boards in industrial, tertiary, and OEM applications. It carries a 25 A rating and combines a Type A‑SI (Super Immunised) residual current sensing element with a 260 mA sensitivity under UL 1053 and 300 mA under IEC/EN 61008‑1. The device is designed to disconnect quickly on earth faults, helping to reduce the risk of electric shock from direct contact and to limit fire hazards. Its A‑SI classification makes it highly resistant to nuisance tripping caused by harmonics, surges, and contaminated or corrosive environments, while voltage-independent operation supports dependable performance even when the supply is unstable. The RCCB offers an Idm of 1,500 A and an Inc of 10 kA with a 100 A gG fuse. A red mechanical flag on the front face indicates a fault trip. The unit clips onto a 35 mm DIN rail, occupies four 9 mm pitches, and measures 36 mm × 81 mm × 60 mm, weighing 0.22 kg. It provides IP20 terminal protection and IP40 when installed inside a modular enclosure. Mechanical endurance reaches 20,000 cycles, and the operating temperature range is -25 °C to +60 °C. The product complies with IEC/EN 61008‑1 and UL 1053, carries IEC and UL certifications, and is available in light grey (RAL7035). It is suitable for OEMs and panel builders seeking a compact, robust earth-leakage solution.
