40 A RCD for branch-circuit protection
The ABB 2CSF202101R1400 is a 2-pole residual current circuit breaker (RCCB) rated at 40 A continuous current, designed to disconnect a circuit when leakage current exceeds the trip threshold — protecting personnel against indirect contact and equipment against ground faults. Rated insulation voltage of 500 V and 50 Hz frequency make it suitable for standard single-phase or two-wire branch circuits in residential and light commercial distribution boards. The DIN rail mount (35 mm width) snaps into standard enclosure rails, and the IP2X finger-safe housing means the live terminals are protected against accidental contact during panel servicing.
Panel fit and dimensions
At 69 mm depth, 35 mm width, and 85 mm height, the 2CSF202101R1400 occupies a single module space on the DIN rail — matching the standard footprint for 2-pole RCCBs in ABB's System pro M compact range. The 2-pole construction switches both line and neutral, which is required for circuits where the neutral is not solidly bonded to earth downstream of the RCD.
Sourcing and lifecycle
Listed as current production by ABB — this is an active catalogue item, not a phase-out or obsolete line. No stock-holding claim is made.