ABB 2CDS384001R0044 S304P-C4 4P 4A 100kA DIN Rail Miniature Circuit Breaker (MCB)

Rated at 4 A, the ABB 2CDS384001R0044 (S304P-C4) is a 4-pole S300P miniature circuit breaker with Curve C tripping and a 100 kA breaking capacity at 415 V AC. Built to IEC/EN 60898-1 and IEC/EN 60947-2 and listed to UL 1077 at 10 kA / 480Y/277 V AC, it switches and protects DIN-rail feeder and branch circuits.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1
• IEC/EN 60947-2
• UL 1077
• CSA 22.2 No. 235

Selection Notes

At 4 A, this S304P-C family member carries a 100 kA Icn at 415 V AC, matching the 1 A, 3 A and 6 A frames before the rating steps down once In reaches 10 A. That headroom keeps the thermal-magnetic trip well within its mechanical breaking limits even at very high prospective fault currents, making it a reasonable choice for control or instrumentation circuits tapped from busbars with high fault levels. Curve C's 5-10 x In magnetic trip threshold still applies, matching loads with inrush rather than pure resistive loads. The 4-pole configuration switches all three phases plus the neutral, which is needed on TN-C-S or TT systems where the neutral must also be isolated.