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Siemens 5SY6425-8 — Miniature Circuit Breakers (MCB)

Siemens 5SY6425-8 SENTRON MCB, 4P D 25A 6kA/15kA

MPN5SY6425-8

Siemens SENTRON 5SY6 series, miniature circuit breaker, 4-pole D-curve 25 A, 6 kA per EN 60898 / 15 kA per IEC 60947-2, 400 V AC, 72 mm wide (4 MW).

$567.14Ref. price · indicative, final on quote
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

5SY6425-8 — Ratings
ParameterValue
Overvoltage categoryIII
5SY6425-8 — Mechanical
ParameterValue
Width72 mm
Height90 mm
Depth76 mm

Product details

Four poles (4P) switch all phases plus neutral, though the neutral is not switched separately.

At 72 mm wide (4 width units,), it occupies four 18 mm module spaces on the rail. Combined top and bottom terminals allow busbar feed-through without extra bridging.

Operating temperature range is -40 °C to 75 °C, with humidity derating above 55 °C: max 95% RH up to 55 °C, then 55% RH at 70 °C, then 35% RH at 75 °C. The breaker is sealable for tamper-proof installations. Overvoltage category III suits fixed-installation distribution panels.

Frequently asked questions

How do I get pricing and availability for 5SY6425-8?

Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels — no stock count or price is published here.

What is the depth of 5SY6425-8?

Overall depth is 76 mm; installation depth behind the panel is 70 mm.

What is the width of 5SY6425-8?

72 mm wide, which is 4 standard width units (18 mm each) on a DIN rail.

What compliance documentation is available for 5SY6425-8?

The breaker carries ratings per EN 60898 (6 kA) and IEC 60947-2 (15 kA), plus UL 1077 / CSA C22.2 No. 235 (5 kA). It is halogen-free and silicon-free. Standard RoHS/REACH declarations are provided by Siemens for the SENTRON line.

MPN
5SY6425-8