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Siemens 5SN6306-7CP — 3-Pole MCB (DIN Rail)

Siemens 5SN6306-7CP MCB, 3-pole C-curve, 6kA/30kA

MPN5SN6306-7CP

Siemens SENTRON 5SN6306-7CP, 3-pole miniature circuit breaker, C-curve, 400 V AC, 6 kA (EN 60898) / 30 kA (IEC 60947-2), 3 modular width units.

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

Specifications

5SN6306-7CP — Identification
ParameterValue
Number of poles3
5SN6306-7CP — Protection
ParameterValue
Breaking capacity per EN 608986 kA
Breaking capacity per IEC 60947-230 kA
5SN6306-7CP — Electrical
ParameterValue
Rated voltage (AC, multi-phase)440 V
Power loss per pole at rated current (AC, hot)1.6 W
Mechanical service life (operating cycles, typ.)10 000
Rated voltage (AC, single-phase)440 V
5SN6306-7CP — Mechanical
ParameterValue
Modular width units3
Width54 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Terminal tightening torque, max.75 °C
Terminal tightening torque, min.-40 °C

Product details

It also carries a DC rating of 72 V maximum, so it can switch DC control circuits within that limit — useful for battery-backed or rectified supplies in a panel. Physical footprint: 54 mm wide (3 modular width units), 90 mm tall, 76 mm deep, with a 70 mm installation depth. That's a standard 3-module DIN-rail mount — it clips onto the rail and occupies three adjacent 18 mm slots. The terminal accepts solid conductors up to 35 mm², sized for the feed-through of larger branch circuits.

Operating temperature range covers -40 °C to 75 °C, which is wide enough for unheated electrical rooms or outdoor enclosures in most climates. Mechanical service life is typical 10,000 operating cycles — adequate for distribution duty where the breaker is cycled infrequently.

The 70 mm installation depth means it fits flush in most distribution boards without protruding beyond the door clearance.

Frequently asked questions

Where can I buy 5SN6306-7CP and how do I get a price?

The 5SN6306-7CP is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote (RFQ) for current availability and pricing — confirmed at quote time.

What is 5SN6306-7CP's breaking capacity?

It is rated 6 kA according to EN 60898 and 30 kA according to IEC 60947-2. The 30 kA figure governs industrial panel SCCR coordination.

Will 5SN6306-7CP drop into a panel specified around 5SL4363-7 without rewiring?

The 5SN6306-7CP shares the same 54 mm width (3 modular units), 76 mm depth, 90 mm height, and 70 mm installation depth as the 5SL4363-7, so it fits the same DIN-rail footprint and panel cutout. The key difference is breaking capacity: 5SN6306-7CP offers 30 kA per IEC 60947-2 versus 10 kA on the 5SL4363-7, so verify the downstream fault current before swapping.

MPN
5SN6306-7CP