The Siemens 3RB1035-2UB0 is an electronic overload relay in the SIRIUS 3RB10 family, sized S2 for direct contactor mounting. It covers a 13...50 A adjustment range with Class 20 trip curve — meaning it allows a 20-second thermal memory before tripping on a locked-rotor condition, which is the standard protection band for standard-duty induction motors driving pumps, fans, and conveyors. The screw terminals and manual-only reset (no auto-reset option) suit it for applications where a manual intervention after a fault is preferred — typical in unattended or remote panels where you want a positive reset action before restarting the line.
Siemens 3RB1035-2UB0 Electronic Overload Relay, 13-50A, Clas
MPN3RB1035-2UB0
Siemens SIRIUS 3RB1035-2UB0 electronic overload relay, 13...50 A, Class 20, screw connection, manual reset only, size S2 for contactor mount.
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Product details
Frequently asked questions
What is 3RB1035-2UB0 used for?
It is an electronic overload relay for motor protection, rated 13...50 A with a Class 20 trip curve. It mounts directly to a contactor and provides thermal overload protection for standard induction motors in industrial control panels.
Where can I buy 3RB1035-2UB0?
This relay is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote and lead-time estimate.
MPN
3RB1035-2UB0