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Siemens 5SM3322-4 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SM3322-4 SENTRON RCCB, 25 A, 30 mA, Type B, 2-Pole

MPN5SM3322-4

Siemens SENTRON 5SM3322-4 RCCB, 2-pole, Type B, short-time delayed, In: 25 A, 30 mA, Un AC: 230 V, 10 kA SCCR, DIN rail mount.

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

Specifications

5SM3322-4 — Electrical Ratings
ParameterValue
Number of poles2
Overvoltage categoryIII
5SM3322-4 — Identification
ParameterValue
Product designationRCCB
Product design / constructionShort-time delayed
5SM3322-4 — Mechanical
ParameterValue
Mounting positionany
Width in modular units4
Maximum45 °C
Minimum-25 °C
Width72 mm
Height90 mm
Depth70 mm
Installation depth70 mm
5SM3322-4 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors

Product details

The Siemens 5SM3322-4 is a SENTRON residual current operated circuit breaker (RCCB), 2-pole, Type B, short-time delayed, rated 25 A with a 30 mA trip sensitivity at 230 V AC. It's a current-production part, still in the active catalog. Type B residual current detection means it handles smooth DC, pulsating DC, and AC fault currents — the full spectrum you get from VFDs, UPS systems, and EV charging circuits. The short-time delayed design (3 kA surge current resistance) prevents nuisance tripping from transient surges or lightning-induced spikes. Overvoltage Category III suits it for fixed-installation distribution boards, not just socket outlets.

Snaps onto standard DIN rail (REG), any mounting position. Depth is 70 mm, matching the installation depth; no extra clearance needed behind the rail for the body.

Frequently asked questions

Where can I buy 5SM3322-4 and how do I get a price?

The 5SM3322-4 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is 5SM3322-4's listed depth and width?

Depth is 70 mm, width is 72 mm (4 modular width units), height is 90 mm.

What compliance documentation does Siemens provide for 5SM3322-4?

The part carries Overvoltage Category III and is rated per IEC 61008-1 and EN 60898. It is silicon-free. Standard Siemens declarations (CE, UKCA) apply to the SENTRON line.

MPN
5SM3322-4