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Siemens 5SL4503-7 — 1-Pole MCB (DIN Rail)

Siemens 5SL4503-7 SENTRON MCB, 1P+N, C-curve, 3A, 10kA

MPN5SL4503-7
Active

Siemens SENTRON 5SL4503-7 miniature circuit breaker, 1P+N, C-curve, 3 A rated, 230 V AC, 10 kA breaking capacity per EN 60898, 2-module width.

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

Specifications

5SL4503-7 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles2
Pole design1P+N
Application suitabilityResidential buildings/infrastructure
5SL4503-7 — Electrical & Protection
ParameterValue
Tripping characteristic classC
Energy limitation class3
Overvoltage categoryIII
5SL4503-7 — Mounting & Connection
ParameterValue
Mounting positionany
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Modular width units2
Torque, min.-40 °C
Torque, max.75 °C
SealableYes
5SL4503-7 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree2
Halogen-freeYes
Silicone-freeYes

Product details

The C-curve means it tolerates inrush currents 5–10× rated before tripping magnetically — the standard choice for moderate motor starts, lighting banks, and transformer primaries in residential and light commercial infrastructure.

Pole configuration and panel fit

1P+N design — the live pole is switched and protected; the neutral pole switches only, no overcurrent protection on the neutral leg. That keeps the wiring simple for single-phase final subcircuits where you need to isolate both conductors but only protect the phase. Mounting position is unrestricted, so it fits horizontal busbar arrangements or vertical riser panels without derating the thermal trip.

Halogen-free and silicon-free construction; sealable with a lead or tag to prevent tampering after commissioning.

Frequently asked questions

Where can I buy the 5SL4503-7 and get a price?

The 5SL4503-7 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

Will the 5SL4503-7 drop into a panel specified around the 5SL4363-7?

No — the 5SL4363-7 is a 3-pole device (54 mm wide, 3 MW), while the 5SL4503-7 is 1P+N (36 mm wide, 2 MW). The DIN-rail mounting is the same, but the busbar arrangement, phase wiring, and neutral switching differ. A panel designed for the 3-pole unit would need rewiring of the feed and neutral bar to accept the 1P+N unit.

What compliance documentation does Siemens provide for the 5SL4503-7?

The 5SL4503-7 is rated per EN 60898 and IEC 60947-2, with a 10 kA breaking capacity under both standards. It carries IP20 protection (with connected conductors) and is rated for overvoltage category III, pollution degree 2. The product is halogen-free and silicon-free. Standard Siemens declarations of conformity and CE marking apply; specific UL/CSA documentation should be confirmed at quote time.

MPN
5SL4503-7