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Siemens 5SY5402-7 — 4-Pole MCB (DIN Rail)

Siemens 5SY5402-7 SENTRON MCB, 4P, 2A, C-Curve, 10kA

MPN5SY5402-7
Active

Siemens SENTRON 5SY5402-7, 4-pole miniature circuit breaker, 2 A rated current, C tripping characteristic, 10 kA breaking capacity per EN 60898, 880 V DC rated voltage.

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

Specifications

5SY5402-7 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityuniversal current
5SY5402-7 — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated current (In), AC2 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
5SY5402-7 — Protection
ParameterValue
Tripping characteristic (trip curve)C
Rated breaking capacity (Icn), per EN 6089810 kA
Energy limitation class3
Overvoltage categoryII
Pollution degree2
Degree of protection (IP)IP20, with connected conductors
Touch protectionYes
5SY5402-7 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Fastening / mounting methodQuick assembly system
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SY5402-7 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of ambient temperature (derating)max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C
5SY5402-7 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

Rated 2 A at AC and 880 V at DC, this breaker handles a 4-pole circuit with a single 2 A path per pole. The DC voltage rating of 880 V is unusually high for a 2 A MCB — it lets you protect DC bus circuits in solar combiner boxes or battery banks without needing a higher-current device. The 10 kA breaking capacity at both AC (EN 60898) and DC (EN 60898-2) means it can safely interrupt a fault current up to 10,000 A without welding contacts or cascading failure upstream — critical for selectivity coordination in a distribution board. Temperature derating is built in: at 35 °C the full 2 A is available, but at 50 °C it drops to 1.8 A, and at 60 °C to 1.7 A.

Mounting position is any — vertical, horizontal, or upside-down — which simplifies layout in tight panels. The combined terminal at top and bottom accepts both busbar and wire, and the touch-protection feature meets IPXXB requirements for finger-safe wiring.

Frequently asked questions

Where can I buy 5SY5402-7 and how do I get a price?

The 5SY5402-7 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ to get a firm price and lead time.

What is 5SY5402-7's breaking capacity?

It has a 10 kA breaking capacity per EN 60898 at AC and 10 kA per EN 60898-2 at DC.

What is the temperature derating for 5SY5402-7?

At 35 °C it carries the full 2 A; at 50 °C it derates to 1.8 A; at 60 °C to 1.7 A.

MPN
5SY5402-7