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Siemens 5SY4380-7CC — 3-Pole MCB (DIN Rail)

Siemens 5SY4380-7CC SENTRON MCB, 80 A, 3P, C-Curve, 10 kA

MPN5SY4380-7CC

Siemens SENTRON 5SY4380-7CC miniature circuit breaker, 3-pole, C-curve, 80 A rated current, 10 kA breaking capacity at 400 V AC per IEC 60947-2, 76 mm depth.

Siemens 5SY4380-7CC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4380-7CC — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Pole configuration3P
Suitability for operationMechanical engineering / industry
5SY4380-7CC — Protection
ParameterValue
Tripping characteristic (curve)C
Overvoltage categoryIII
IP protection classIP20, with connected conductors
Pollution degree3
5SY4380-7CC — Electrical
ParameterValue
Rated current (AC)80 A
Rated voltage (AC, multi-phase)440 V
Neutral conductor switchingNo
5SY4380-7CC — Mechanical
ParameterValue
Modular width units3
Mounting positionany
Width54 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Terminal tightening torque, max.75 °C
Terminal tightening torque, min.-40 °C
Combined terminal, topYes
Combined terminal, bottomYes
Fastening methodQuick assembly system
SealableYes
5SY4380-7CC — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of surrounding temperaturemax. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C

Product details

80 A C-Curve MCB for Distribution Panels

Rated 80 A at 35 °C ambient, the breaker derates to 76.24 A at 40 °C, 74.24 A at 45 °C, 72.24 A at 50 °C, and 70.16 A at 55 °C — a thermal curve that matters when the panel is sealed or near heat sources. The 3-pole design (3P) switches all phases; neutral is not switched.

Operating temperature range from -40 °C to 75 °C, with humidity limits of 95% up to 55 °C, 55% up to 70 °C, and 35% up to 75 °C. The product designation per EN 61346-2 and IEC 81346-2 is F (protective device).

Frequently asked questions

Where can I buy 5SY4380-7CC and how is it quoted?

The 5SY4380-7CC is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quote — submit an RFQ for a firm commercial offer.

What is the closest functional alternative to 5SY4380-7CC?

The closest functional peer within the SENTRON family is the 5SY4301-7CV, which shares the same 3-pole C-curve design but at a lower current rating. The 5SY4380-7CC is the 80 A variant; the 5SY4301-7CV is a lower-current option. Both share the same form factor and breaking capacity class, so panel layout and wiring are compatible — the deciding factor is the load current requirement.

What are the key dimensions of 5SY4380-7CC?

The 5SY4380-7CC measures 76 mm depth, 54 mm width (3 modular units), and 90 mm height. Installation depth is 70 mm. These dimensions are standard for the SENTRON 5SY4 series and fit standard DIN-rail enclosures.

What compliance documentation is available for 5SY4380-7CC?

The 5SY4380-7CC is designed to IEC 60947-2 for breaking capacity (10 kA at 400 V AC) and carries the SENTRON brand designation. It is halogen-free and silicon-free. For specific RoHS, REACH, or UL documentation, request the manufacturer's declaration at quote time — these are typically provided with the shipment.

MPN
5SY4380-7CC