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Siemens 5SY7603-7 — 4-Pole MCB (DIN Rail)

Siemens 5SY7603-7 SENTRON MCB, 4P C 3A 400V AC 15/40kA

MPN5SY7603-7

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Siemens SENTRON 5SY7 series, miniature circuit breaker, 4-pole (3P+N), C-curve, 3 A rated current, 400 V AC, 15 kA (EN 60898) / 40 kA (IEC 60947-2), IP20 with connected conductors.

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Siemens 5SY7603-7 datasheet (PDF)

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

Specifications

5SY7603-7 — Identification
Parameter	Value
Type / order code	5SY7
Brand name	SENTRON
Application suitability	Mechanical engineering / industry

5SY7603-7 — Ratings
Parameter	Value
Number of poles	4
Pole configuration	3P+N
Rated current (In), AC	400 V
Rated current (In), AC	3 A
Rated voltage, AC (multi-phase)	440 V
Rated voltage, AC (single-phase)	440 V
Rated voltage, DC (max.)	72 V
Voltage type	AC
Rated frequency	50/60 Hz

5SY7603-7 — Protection
Parameter	Value
Tripping characteristic (trip curve)	C
Rated breaking capacity (Icn), per EN 60898	15 kA
Rated breaking capacity, per IEC 60947-2	40 kA
Breaking capacity, AC (UL 1077 / CSA C22.2 No.235)	5 kA
Overvoltage category	III
Degree of protection (IP)	IP20, with connected conductors
Neutral conductor switching	Yes
Touch protection	Yes

5SY7603-7 — Mechanical
Parameter	Value
Width in modular units	4
Width	72 mm
Height	90 mm
Depth	76 mm
Installation depth	70 mm
Mounting position	any
Combined terminal, top	Yes
Combined terminal, bottom	Yes
Sealable	Yes

5SY7603-7 — Environmental
Parameter	Value
Halogen-free	Yes
Silicone-free	Yes
Influence of ambient temperature (derating)	max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C

5SY7603-7 — Performance
Parameter	Value
Mechanical service life (switching cycles, typ.)	10 000

Product details

Siemens 5SY7603-7 SENTRON Miniature Circuit Breaker — 4-Pole, C-Curve, 3 A

The Siemens 5SY7603-7 is a 4-pole (3P+N) miniature circuit breaker from the SENTRON 5SY7 series, rated 3 A at 400 V AC with a C tripping characteristic. Mounts on a DIN rail via the quick-assembly system, occupies 4 width units (72 mm), and accepts conductors from 0.75 mm² up to 35 mm² solid or stranded.

Integration Notes

Touch protection is built in (fingertip-safe terminals per the design). Sealable, halogen-free, silicon-free — suitable for clean-room or food-grade environments where outgassing is a concern.