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Siemens 5SY5408-7 — Miniature Circuit Breakers (MCB)

Siemens 5SY5408-7 SENTRON MCB, 4P C-Curve, 10kA, 400V AC

MPN5SY5408-7
Active

Siemens SENTRON 5SY5408-7, 4-pole miniature circuit breaker, C-curve, 10 kA breaking capacity per IEC/EN 60898-2, 400 V AC rated, 72 mm wide.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

5SY5408-7 — Ratings
ParameterValue
Overvoltage categoryII
5SY5408-7 — Mechanical
ParameterValue
Width72 mm
Height90 mm
Depth76 mm

Product details

Rated 400 V AC (440 V max multi- or single-phase) and 880 V DC (1,000 V DC max), it handles a wide range of supply voltages.

IP20 with connected conductors — suitable for dry indoor panels, not washdown zones. Combined top and bottom terminals simplify daisy-chaining busbars. Neutral conductor is not switched (solid neutral bar passes through). Sealable design allows lockout/tagout. Halogen-free and silicon-free construction reduces outgassing in sensitive environments.

Rated for ambient temperatures from -40 °C to 75 °C, with humidity derating above 55 °C (95% RH up to 55 °C, 55% up to 70 °C, 35% at 75 °C). Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Pollution degree 2, overvoltage category II.

Frequently asked questions

What is the breaking capacity of 5SY5408-7?

10 kA per IEC/EN 60898-2 and 15 kA at DC per IEC 60947-2.

Where can I buy the 5SY5408-7?

The 5SY5408-7 is sourced and quoted to order through independent distribution. Submit an RFQ for current pricing and availability.

What is the closest functional second-source to 5SY5408-7?

The 5SY5416-7 is a higher-current sibling in the same SENTRON 5SY series, same 4-pole C-curve form factor. It will drop into the same DIN-rail footprint but check the amp rating against your branch-circuit load.

MPN
5SY5408-7