ABB 2CSS255101R0105 SN201-B10 1P+N 10A B-Curve 6kA Miniature Circuit Breaker (MCB)

The ABB SN201-B10 (SKU 2CSS255101R0105) is a 1-module, 1P+N miniature circuit breaker rated 10 A with a type B tripping characteristic and 6 kA breaking capacity at 230 V AC. Its neutral terminal sits on the right side of the device, and type B trips instantaneously between 3 and 5 times In, suiting resistive and lightly inductive single-phase loads such as lighting or socket circuits with little inrush current.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1

Selection Notes

Type B trips instantaneously between 3 and 5 times In, the tightest margin in the ABB MCB curve family, which suits purely resistive loads like incandescent lighting or heating elements with little inrush. At In 10 A, the SN201-B10 is sized for a lightly loaded single circuit; the higher-current ratings in the same 1-module SN201 frame cover heavier circuits without changing the B-curve's trip sensitivity. Keep it off circuits with motor starts or transformer inrush, where nuisance tripping on a B-curve is common.