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Siemens 5SY8325-7 — Miniature Circuit Breakers (MCB)

Siemens 5SY8325-7 SENTRON MCB, 3P C-Char, 30kA IEC

MPN5SY8325-7
Active

Siemens SENTRON 5SY8325-7, 3-pole miniature circuit breaker, C tripping characteristic, 30 kA interrupting capacity per IEC 60947-2, 400 V AC, UL 1077 listed.

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

5SY8325-7 — Ratings
ParameterValue
Overvoltage categoryIII
5SY8325-7 — Mechanical
ParameterValue
Width54 mm
Height90 mm
Depth76 mm

Product details

For DC circuits it's rated 60 V with 15 kA interrupting capacity, and under UL 1077 it carries a 5 kA rating — that's the number to use for North American supplemental protection listings. Installation depth is 70 mm.

It's not a residential-grade device. Sealable terminals let you lock out adjustment after commissioning — useful for machines that must meet lockout/tagout procedures. Rated for 10 000 mechanical operating cycles — that's the life of the mechanism, not the electrical endurance under fault. For a panel that sees frequent switching (like a machine tool with daily power-down), that's a solid service life.

Listed to IEC / EN 60947-2 and UL 1077 / CSA C22.2 No.235. The UL 1077 listing is supplemental protection — not a branch-circuit rated breaker under UL 489, so verify your local code's requirement before specifying it as the sole overcurrent device on a feeder. Vibration resistance tested to IEC 60068-2-6: ±1 mm at 5 to 25 Hz, 50 m/s² at 25 to 150 Hz. That covers most industrial machinery vibration profiles — pumps, compressors, conveyors. Temperature influence data shows derating above 55 °C: max 95% humidity at 55 °C, dropping to 55% at 70 °C and 35% at 75 °C.

Frequently asked questions

Will 5SY8325-7 drop into a panel specified around 5SY4140-7 without rewiring?

Both are 3-pole SENTRON MCBs on the same DIN-rail footprint, but the 5SY8325-7 has a C characteristic while the 5SY4140-7 is a B curve. The physical fit is identical — same 3-module width, same terminal layout — but the trip curve difference means you must verify the load's inrush profile. For resistive or lightly inductive loads the swap is clean; for motor circuits the C curve is actually the better choice.

What compliance documentation does this brand provide for 5SY8325-7?

The breaker carries IEC/EN 60947-2 and UL 1077 / CSA C22.2 No.235 certifications. It's halogen-free and silicon-free, which supports RoHS and REACH compliance. Standard Siemens declaration of conformity and UL file are available with the shipment documentation.

MPN
5SY8325-7