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Siemens 3RA6500-1CB43 — Motor Starters

Siemens 3RA6500-1CB43 SIRIUS Compact Reversing Starter, 4 A

MPN3RA6500-1CB43

Siemens SIRIUS compact reversing starter, order code 3RA6500-1CB43, rated 4 A at 400 V AC, adjustable trip Class 10 and 20, with IO-Link COM2 communication, 90 mm wide, screw and snap-on DIN-rail mount.

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

Identification

3RA6500-1CB43 — Identification
ParameterValue
Product designationCompact starter for IO-Link
Main circuit poles3
BrandSIRIUS
Product design / constructionreversing starter
Reference designation (IEC 81346-2)Q

Ratings & Performance

3RA6500-1CB43 — Ratings & Performance
ParameterValue
Rated motor power at 400 V1 500 W
Rated motor power at 460/480 V (hp)2 hp
Rated motor power at 575/600 V (hp)3 hp
Rated current at 480 V4 A
Rated current at 600 V4 A
Rated impulse withstand voltage (Uimp)6 000 V

Protection & Tripping

3RA6500-1CB43 — Protection & Tripping
ParameterValue
Trip classCLASS 10 and 20 adjustable
Short-circuit protectionYes
Overload release setting range (current)1 ... 4 A
Duty / utilization type (IEC 60947-6-2)continous operation according to IEC 60947-6-2

Contacts & Control

3RA6500-1CB43 — Contacts & Control
ParameterValue
Auxiliary contacts, NO0
Auxiliary contacts, NC0
Auxiliary switch extensionYes

Mechanical & Connection

3RA6500-1CB43 — Mechanical & Connection
ParameterValue
Main contact conductor range (AWG)2x (16 ... 10), 1x 8
Mounting / fastening methodscrew and snap-on mounting
Mounting positionany
Width90 mm
Height170 mm
Depth165 mm

Environmental

3RA6500-1CB43 — Environmental
ParameterValue
Operating temperature range-20 ... +60 °C
Storage temperature range-55 ... +80 °C
Transport temperature range-55 ... +80 °C
Pollution degree3

Product details

Rated for continuous operation per IEC 60947-6-2, it handles motor starts and stops in both forward and reverse without external interlocking. The adjustable trip Class 10 and 20 lets you match the thermal overload curve to the motor's starting profile — Class 10 for shorter start times like fans or pumps, Class 20 for higher-inertia loads like conveyors or crushers.

IO-Link and control integration

IO-Link protocol is built in at COM2 (38.4 kBaud), giving the PLC direct access to the starter's diagnostic data — trip status, current draw, thermal capacity utilization — over a standard M12 cable, no analog or discrete I/O card needed. The 5 on-board LEDs provide local status indication for power, communication, and fault conditions, useful during commissioning and troubleshooting. Control voltage is 24 V DC, which is standard for modern PLC cabinets; the coil dissipation is 2.9 W at rated voltage, so thermal rise in a dense panel is manageable.

Width is 90 mm, height 170 mm, depth 165 mm — fits a standard 90 mm-wide DIN-rail slot; stacking multiple units side-by-side is straightforward. Shock-rated at 60 m/s² (6 g) for 10 ms, three shocks per axis, and vibration-rated per the listed profile — suitable for installation on machinery or conveyors with moderate mechanical stress.

Main circuit connections are plug-in without terminals — the mating plug accepts solid conductors from 0.5 to 4 mm², or two conductors from 0.5 to 2.5 mm² each, which covers standard motor wiring up to the 4 A rating.

Frequently asked questions

What is the trip class of 3RA6500-1CB43 and is it adjustable?

The trip class is adjustable between Class 10 and Class 20, letting you match the overload curve to the motor's starting characteristics.

MPN
3RA6500-1CB43