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Siemens 5SY4614-8 — Miniature Circuit Breakers (MCB)

Siemens 5SY4614-8 SENTRON MCB, 4-pole D-curve 0.3 A, 10 kA

MPN5SY4614-8
Active

Siemens SENTRON 5SY4 series miniature circuit breaker, 4-pole (3P+N), D tripping characteristic, 0.3 A rated current, 10 kA breaking capacity per EN 60898, 400 V AC.

Siemens 5SY4614-8 datasheet (PDF)
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

5SY4614-8 — Ratings
ParameterValue
Overvoltage categoryIII
5SY4614-8 — Mechanical
ParameterValue
Width72 mm
Height90 mm
Depth76 mm

Product details

The Siemens SENTRON 5SY4614-8 is a 4-pole miniature circuit breaker (3P+N) with a D tripping characteristic, rated at 0.3 A and 400 V AC.

Breaking capacity and approvals

Rated breaking capacity is 10 kA per EN 60898, 35 kA per IEC 60947-2 at 400 V AC, and 15 kA at the DC maximum of 72 V. For UL 1077 / CSA C22.2 No. 235 applications, the interrupting rating is 5 kA at AC. The overvoltage category is III, suitable for fixed-installation distribution panels.

Mounting position is any; the quick-assembly system snaps onto DIN rail. Touch protection is integrated.

Frequently asked questions

What is the breaking capacity of 5SY4614-8?

The breaking capacity is 10 kA per EN 60898, 35 kA per IEC 60947-2 at 400 V AC, 15 kA at 72 V DC, and 5 kA per UL 1077 / CSA C22.2 No. 235 at AC.

What does the D tripping characteristic mean on this breaker?

The D-curve magnetic trip activates at 10–20× rated current (3–6 A for this 0.3 A unit), designed for loads with high inrush like motors, transformers, and solenoid valves. It prevents nuisance tripping on startup while still clearing short circuits.

What conductor sizes does 5SY4614-8 accept?

It accepts 0.75 to 35 mm² solid or stranded copper conductors. The combined terminals at top and bottom support both wire types.

Where can I buy 5SY4614-8?

This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm delivery commitment.

Will 5SY4614-8 drop into a panel specified around 5SY4140-7 without rewiring?

Both are 4-pole SENTRON 5SY4 breakers with the same module width (4 MW = 72 mm) and DIN-rail mounting. The 5SY4614-8 is a 0.3 A D-curve; the 5SY4140-7 is a different rating and curve. Panel cutout and busbar pitch are identical, so mechanical fit is the same — no rewiring of the enclosure needed, but verify the rating and curve match the circuit protection requirements.

MPN
5SY4614-8