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Siemens 3RA6500-1BB42 — Motor Starters

Siemens 3RA6500-1BB42 SIRIUS Compact Starter, 370W, 53kA

MPN3RA6500-1BB42

Siemens SIRIUS 3RA6500-1BB42 compact reversing motor starter, 370 W at 400 V, 53 kA breaking capacity, adjustable trip class 10/20, IO-Link, screw terminals, 170 x 90 x 165 mm.

StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RA6500-1BB42 — Identification
ParameterValue
Product designationCompact starter for IO-Link
Main circuit poles3
BrandSIRIUS
Product design / constructionreversing starter
Reference designation (IEC 81346-2)Q

Ratings & Performance

3RA6500-1BB42 — Ratings & Performance
ParameterValue
Rated motor power at 400 V370 W
Rated motor power at 460/480 V (hp)0.5 hp
Rated motor power at 575/600 V (hp)0.5 hp
Rated current at 480 V1.25 A
Rated current at 600 V1.25 A
Rated impulse withstand voltage (Uimp)6 000 V

Protection & Tripping

3RA6500-1BB42 — Protection & Tripping
ParameterValue
Trip classCLASS 10 and 20 adjustable
Short-circuit protectionYes
Overload release setting range (current)0.32 ... 1.25 A
Duty / utilization type (IEC 60947-6-2)continous operation according to IEC 60947-6-2

Contacts & Control

3RA6500-1BB42 — Contacts & Control
ParameterValue
Auxiliary contacts, NO0
Auxiliary contacts, NC0
Auxiliary switch extensionYes

Mechanical & Connection

3RA6500-1BB42 — Mechanical & Connection
ParameterValue
Mounting / fastening methodscrew and snap-on mounting
Mounting positionany
Width90 mm
Height170 mm
Depth165 mm

Environmental

3RA6500-1BB42 — Environmental
ParameterValue
Operating temperature range-20 ... +60 °C
Storage temperature range-55 ... +80 °C
Transport temperature range-55 ... +80 °C
Pollution degree3

Product details

Compact reversing starter with IO-Link

The 3RA6500-1BB42 is a SIRIUS compact reversing starter — a single device that handles forward/reverse motor control in one DIN-rail footprint, eliminating the need for two separate contactors and a mechanical interlock. Rated 370 W at 400 V (AC-3 duty per IEC 60947-6-2), it draws 1.25 A per phase in continuous operation — sized for small conveyors, pumps, and actuator drives up to 0.5 hp at 460/480 V. The IO-Link interface (COM2, 38.4 kBaud) streams diagnostic data — coil status, trip class, overload count — back to the controller, so a line-side PLC sees the starter's health without hardwired feedback.

Short-circuit coordination and trip tuning

Rated breaking capacity of 53 kA at 400 V — this starter coordinates with upstream MCCBs or fuses to clear a bolted fault without damaging the contactor, critical for panel SCCR compliance. Trip class is adjustable between CLASS 10 and CLASS 20, letting you match the overload curve to the motor's starting profile — CLASS 10 for fast-starting pumps, CLASS 20 for high-inertia loads like fans or centrifuges. The reversing starter's main contacts are rated for 10 million mechanical operations; no-load switching frequency reaches 3,600 cycles per hour, so it handles frequent reversing in indexing or positioning applications.

Mounts on standard 35 mm DIN rail (EN 60715) with screw and snap-on fastening — the 90 mm width and 165 mm depth fit a standard 200 mm deep enclosure with room for gland plates. Operates from -20 to +60 °C ambient; storage and transport range is -55 to +80 °C. Shock rated at 60 m/s² (6g) and vibration tested to 20 m/s² at 5.8–500 Hz — suitable for machine-mounted panels near rotating equipment.

Sourced through authorized industrial distribution channels.

Frequently asked questions

What is the short-circuit breaking capacity of 3RA6500-1BB42 at 400 V?

53 kA at 400 V — this is the rated short-circuit breaking capacity for the reversing starter, sufficient for most industrial panel SCCR requirements when coordinated with upstream protection.

Can 3RA6500-1BB42 be mounted in any position?

Yes, mounting position is unrestricted, though vertical mounting on standard DIN rail is recommended for optimal heat dissipation.

MPN
3RA6500-1BB42