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About the Siemens 3RV1021
The Siemens 3RV1021 is a compact motor protection and starter device from Siemens' 3RV1 family, designed for reliable overload and short‑circuit protection in industrial control panels. Built for easy installation and robust operation, it suits motor protection, control circuits and machinery applications where dependable thermal and magnetic protection is required.

Siemens,3RV1021-0KA10,Motor Protector Circuit Breaker 0.9-1.25A
- Manufacturer: Siemens
- Model: 3RV1021
NEW OLD STOCK. Please see pictures for details. Bin 224
$87 USDGalion, OH- Trusted Seller
Siemens Circuit Breaker 3RV1021-1DA10
- Manufacturer: Siemens
- Model: 3RV1021
You are buying one (1) Siemens Circuit Breaker 3RV1021-1DA10. It is new but has no box.
$149 USDAustinville, VA - Trusted Seller
Siemens Circuit Breaker 3RV1021 0JA10 New In Box
- Manufacturer: Siemens
- Model: 3RV1021
You are buying one (1) Siemens circuit breaker 3RV1021 0JA10. It is new in box.
$119 USDAustinville, VA - Trusted Seller
Siemens 3RV1021-4AA10 Circuit Breaker 3RV1021-4AA10
- Manufacturer: Siemens
- Model: 3RV1021-4AA10
You are purchasing one (1) Siemens 3RV1021-4AA10 Circuit Breaker 3RV1021-4AA10. This item is in new condition in factory packaging. Breaker is rated at 10 Amps
$149 USDAustinville, VA - Trusted Seller
Siemens Circuit Breaker 3RV1021-4DA10 New In Box
- Manufacturer: Siemens
- Model: 3RV1021
You are buying one (1) Siemens 3RV1021-4DA10 circuit breaker. It is new in factory box.
$189 USDAustinville, VA - Trusted Seller
SIEMENS 3RV1021-0CA10 ($45.99 OBO)
- Manufacturer: Siemens
- Model: 3RV1021
“Very good conditions.” 3RV10210CA10 DISCONTINUED BY MANUFACTURER 10/01/2019 CIRCUIT BREAKER 3 POLE 0.18-0.25 AMP SCREW TERMINALS
$46 USDWaukesha, WI - Trusted Seller
SIEMENS 3RV1021-1FA10 ($79.99/EACH OBO)
- Manufacturer: Siemens
- Model: 3RV1021
“Very good conditions.” 3RV10211FA10 DISCONTINUED BY MANUFACTURER 10/01/2019 CIRCUIT BREAKER SIZE S0 3.5-5 AMP 3 POLE 400/690 VAC 50/60 HZ SCREW TERMINALS DIN-RAIL MOUNT
$80 USDWaukesha, WI - Trusted Seller
SIEMENS 3RV1021-0EA10 ($54.99/EACH OBO)
- Manufacturer: Siemens
- Model: 3RV1021
“Very good conditions.” 3RV10210EA10 DISCONTINUED BY MANUFACTURER CIRCUIT BREAKER SIZE S0 FOR MOTOR PROTECTION 0.4/0.28AMP 575 VAC CLASS 10 STANDARD SWITCHING CAPACITY
$55 USDWaukesha, WI - Trusted Seller
SIEMENS 3RV1021-0AA10 ($36.99 OBO)
- Manufacturer: Siemens
- Model: 3RV1021
“Very good conditions.” 3RV10210AA10 DISCONTINUED BY MANUFACTURER CIRCUIT BREAKER TYPE E 11/.16AMP 3POLE 400/690V SCREW TERMINALS DIN RAIL MOUNTABLE
$37 USDWaukesha, WI - Trusted Seller
SIEMENS 3RV1021-1JA15 ($44.99 OBO)
- Manufacturer: Siemens
- Model: 3RV1021
“Very good conditions.” 3RV10211JA15 DISCONTINUED BY MANUFACTURER 01-10-19 CIRCUIT BREAKER 7 - 10 AMP 50HZ 1NO + 1NC SCREW TERMINALS TRANSVERSE AUXILIARY SWITCH Local deliveries available, simply message us befor...
$45 USDWaukesha, WI - Trusted Seller

NEW OPEN BOX 3RV1021-4CA10 SIEMENS Circuit Breaker STOCK G533A
- Manufacturer: Siemens
- Model: 3RV1021
NEW OPEN BOX 3RV1021-4CA10 SIEMENS Circuit Breaker STOCK G533A
$200 USDMontgomeryville, PA Siemens 3RV1021-1GA10 Circuit Motor Breaker Loc4D44
- Manufacturer: Siemens
- Model: 3RV1021
Siemens 3RV1021-1GA10 Circuit Motor Breaker Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our use...
$71 USDDuncan, SCSiemens 3RV1021-1DA10 Circuit Motor Breaker Loc4D46
- Manufacturer: Siemens
- Model: 3RV1021
Siemens 3RV1021-1DA10 Circuit Motor Breaker Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our use...
$71 USDDuncan, SC- Trusted Seller

Siemens 3RV1021-0HA15 Circuit Breaker, Size S0, For Motor Protection [New]
- Manufacturer: Siemens
- Model: 3RV1021
. . . . . Circuit breaker size S0 for motor protection CLASS 10 A-release 0.55...0.80 A N-release 10 A Screw terminal Standard switching capacity with transverse auxiliary switch 1 NO+1 NC. Siemens. Siemens. 3RV1...
$168 USDTempe, AZ - Trusted Seller

Siemens 3RV1021-1BA10 Manual Starter & Enclosure, Open Type, 1.4-2 FLA Adjust [New]
- Manufacturer: Siemens
- Model: 3RV1021
. . . . . Circuit breaker size S0 for motor protection CLASS 10 A-release 1.4...2 A N-release 26 A Screw terminal Standard switching capacity. Siemens. Siemens. 3RV1021-1BA10.
$398 USDTempe, AZ

