Skip to main content
Log in
Siemens 5SN6402-7CP — 4-Pole MCB (DIN Rail)

Siemens 5SN6402-7CP MCB 4-Pole C-Curve, 400V AC, 6kA/30kA

MPN5SN6402-7CP

Siemens SENTRON 5SN6 series, 4-pole miniature circuit breaker, C-curve, 400 V AC, 6 kA (EN 60898) / 30 kA (IEC 60947-2), order code 5SN6402-7CP.

Siemens 5SN6402-7CP datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SN6402-7CP — Ratings
ParameterValue
Number of poles4
Rated voltage, AC (multi-phase)440 V
5SN6402-7CP — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
5SN6402-7CP — Performance
ParameterValue
Power loss per pole, AC (hot state, at In)1.2 W

Product details

Its C-curve tripping characteristic suits it for general-purpose protection of mixed loads — lighting, small motors, control transformers — where moderate inrush currents (5–10× rated) are expected.

Breaking capacity: what the dual rating means for your panel

The 5SN6402-7CP carries two breaking-capacity ratings: 6 kA according to EN 60898 and 30 kA according to IEC 60947-2. The EN 60898 figure (6 kA) governs residential and light commercial installations where the prospective fault current is known to stay under that threshold.

Voltage and pole configuration

The four poles (4P) switch all live conductors, making it suitable for three-phase plus neutral applications. For DC circuits, the maximum rated voltage is 72 V — this is not a general-purpose DC breaker for higher voltages, so keep it on AC duty unless the DC voltage is within that limit.

Rated for 10 000 mechanical operating cycles typical. Wire range up to 35 mm² solid, which handles most feeder and branch-circuit conductors.

Frequently asked questions

What are the key ratings for 5SN6402-7CP?

4-pole, C-curve, rated 400 V AC at 50 Hz, with a breaking capacity of 6 kA per EN 60898 and 30 kA per IEC 60947-2. Maximum DC voltage is 72 V. Operating temperature range -40 °C to +75 °C.

Will 5SN6402-7CP drop into a panel specified around 5SY5416-7 without rewiring?

The 5SN6402-7CP shares the same 4-pole, 4-modular-width footprint (72 mm wide, 76 mm deep, 90 mm tall) as the 5SY5416-7, and both mount on standard DIN rail with a quick-assembly system. The key difference is the breaking capacity: the 5SN6402-7CP is rated 6 kA (EN 60898) / 30 kA (IEC 60947-2), while the 5SY5416-7 is rated 10 kA (EN 60898) / 15 kA (IEC 60947-2). If the panel's fault level is below 6 kA, the 5SN6402-7CP is a direct mechanical fit; above that, verify coordination.

Where can I buy 5SN6402-7CP?

This part is sourced and quoted to order through independent distribution against an RFQ. Availability and current pricing are confirmed at quote time.

MPN
5SN6402-7CP