ABB 2CSS255101R0065 SN201-B6 1P+N 6A B-Curve 6kA DIN Rail Miniature Circuit Breaker (MCB)

The ABB 2CSS255101R0065 is an SN201-B6 miniature circuit breaker: a 1P+N device rated 6 A with a B tripping curve and a 6 kA short-circuit capacity at 230 V, built for overload and short-circuit protection of final circuits. It occupies one DIN-rail module, terminates with cage screw terminals, and locates the neutral terminal on the right-hand side of the housing.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1

Selection Notes

The B tripping curve trips instantaneously between 3 and 5 times In, so this 6 A breaker suits resistive and lighting loads with low inrush, such as lighting circuits or socket outlets with minimal transient draw. Pick this B-curve, 6 A variant over the C-curve siblings in this series when the protected circuit has no significant inductive or motor-starting inrush; a C-curve rating is the better choice for circuits feeding transformers, ballasts or small motors where a higher instantaneous trip threshold avoids nuisance tripping.