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Siemens 3RV2321-1HC10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2321-1HC10 SIRIUS Circuit Breaker, 100 kA @ 400 V

MPN3RV2321-1HC10
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Siemens SIRIUS circuit breaker, 3RV2321-1HC10, for starter combinations, 45 mm wide, 100 kA interrupting at 400 V AC, screw and snap-on DIN rail mount.

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

3RV2321-1HC10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2321-1HC10 — Electrical
ParameterValue
Rated operational current (Ie)8 A
Rated voltage20 ... 690 V
Rated voltage, AC-3 (max.)690 V
Rated frequency50 ... 60 Hz
Rated insulation voltage (Ui), pollution degree 3690 V
Rated impulse withstand voltage (Uimp)6 kV
Number of poles3
Power loss (AC, hot)9.25 W
Power loss, per pole (AC, hot)3.1 W
3RV2321-1HC10 — Protection & Tripping
ParameterValue
Instantaneous short-circuit trip current104 A
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)100 kA
Breaking capacity at 500 V (AC)42 kA
Breaking capacity at 690 V (AC)6 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V4 kA
Short-circuit trip typemagnetic
Short-circuit protectionYes
Phase-failure detectionNo
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2321-1HC10 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Endurance, auxiliary contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
Auxiliary CO (changeover) contacts0
3RV2321-1HC10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)
Conductor cross-section, finely stranded with ferrule2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²
Conductor range, AWG (main contacts)2x (16 ... 12), 2x (14 ... 8)
3RV2321-1HC10 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth97 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV2321-1HC10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Relative humidity (operation)10 ... 95 %
Max. installation altitude2 000 m
3RV2321-1HC10 — Specifications
ParameterValue
Design Of The ProductFor starter combinations

Product details

It mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, with a 45 mm width and 97 mm cube footprint, so it fits standard panel layouts without extra adaptors.

Rated interrupting capacity hits 100 kA at 240 V and 400 V AC, 42 kA at 500 V, and 4 kA at 690 V. The 100 kA figure at 400 V means this breaker can safely clear a fault up to 100,000 symmetrical amps without welding contacts or cascading damage upstream — critical for high-fault panels near large transformers.

Screw-type terminals on the main current circuit accept 2x (1–2.5 mm²) solid or stranded, or 2x (2.5–10 mm²). Main contact screws are M4. Any mounting position allowed.

Frequently asked questions

Where can I buy 3RV2321-1HC10?

Sourced to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time.

What is the interrupting capacity of 3RV2321-1HC10 at 400 V?

100 kA at 400 V AC, which means it can safely interrupt a fault up to 100,000 symmetrical amps at that voltage.

Will 3RV2321-1HC10 drop into a panel specified for 3RV2021-1FA15?

Both are SIRIUS circuit breakers on 35 mm DIN rail with similar terminal ranges, but the 3RV2321-1HC10 is a different frame size (45 mm wide) — verify physical fit and interrupting capacity against the panel's fault current before swapping.

What compliance documentation does Siemens provide for 3RV2321-1HC10?

Standard Siemens documentation includes RoHS and REACH declarations; UL and IEC certifications are typical for the SIRIUS line, but specific certs should be confirmed on the nameplate or via the manufacturer.

MPN
3RV2321-1HC10