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ABB S403M-C16NP — 3-Pole MCB (DIN Rail)

ABB S403M-C16NP S400 MCB, 3P 16A Curve C, 10kA

MPNS403M-C16NP

ABB S400 series miniature circuit breaker, S403M-C16NP, 3-pole, 16 A, Trip Curve C, 240 VAC, 10 kA interrupting capacity, DIN rail mount.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

S403M-C16NP — Identification
ParameterValue
Number of poles3
S403M-C16NP — Electrical
ParameterValue
Voltage (AC)240
Current (A)16
S403M-C16NP — Protection
ParameterValue
Interrupting rating (AC)10 kA
S403M-C16NP — Mechanical
ParameterValue
Mounting typeDIN Rail
S403M-C16NP — Other specifications
ParameterValue
TypeTrip Curve C
Family (Style)S400

Product details

The ABB S403M-C16NP is a 3-pole miniature circuit breaker from the S400 family, rated 16 A with a Trip Curve C characteristic at 240 VAC. The DIN-rail footprint means it snaps directly into a standard panel enclosure alongside other S400 or System pro M compact devices.

Curve C and the 16 A rating — what they mean for selection

Trip Curve C means the magnetic trip operates at 5 to 10 times rated current (80 to 160 A for this 16 A breaker). The 16 A rating governs the continuous load it can carry; for a 240 VAC single-phase circuit that works out to roughly 3.8 kW resistive, but the real limit is the connected load's steady-state current, not the breaker's ampacity.

Frequently asked questions

Where can I buy the S403M-C16NP and get a price?

The S403M-C16NP is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is the S403M-C16NP's interrupting rating?

It carries a 10 kA interrupting rating at 240 VAC, which means it can safely interrupt fault currents up to that level without welding contacts or failing catastrophically.

MPN
S403M-C16NP