Siemens 3RA7121-0EA17-0AB4 SIRIUS Load Feeder, S00, 0.3 A

Specifications

3RA7121-0EA17-0AB4 — Identification
Parameter	Value
Load feeder size	S00
Product design / construction	direct starter

3RA7121-0EA17-0AB4 — Protection & Tripping
Parameter	Value
Duty / utilization type (IEC 60947-6-2)	2

3RA7121-0EA17-0AB4 — Mechanical & Connection
Parameter	Value
Main circuit connection type	screw-type terminals
Width	90mm
Height	211mm
Depth	113mm

Product details

The Siemens 3RA7121-0EA17-0AB4 is a SIRIUS direct starter in size S00, combining a contactor and thermal overload relay into a single, coordinated unit for a 0.09 kW motor at 400 V AC-3 duty, drawing 0.3 A full-load current. The thermal overload release is adjustable from 0.28 A to 0.4 A, covering the motor FLA for that 0.09 kW rating and allowing fine-tuning for motor nameplate current.

The S00 footprint — 90 mm wide, 211 mm tall, 113 mm deep — fits alongside other S00 components in a structured panel layout.

Short-circuit and coordination

The unit includes short-circuit protection and is designed for cascading (Type of assignment 2), allowing selective coordination with upstream breakers in a motor control center.

Frequently asked questions

Where can I buy 3RA7121-0EA17-0AB4 and get a price?

This part is sourced to order against an RFQ through independent distribution. Submit a request for quote to confirm current availability and pricing.

What is the rated motor current for 3RA7121-0EA17-0AB4?

The rated motor current at AC-3, 400 V is 0.3 A, with an adjustable thermal overload range of 0.28 to 0.4 A. This corresponds to a rated motor power of 0.09 kW at 400 V.

Is 3RA7121-0EA17-0AB4 compatible with 24 V DC systems?

Yes, the control supply voltage is 24 V DC, making it directly compatible with standard 24 VDC safety PLC outputs or relay logic.