The 3RB1025-1NB0: The 0.4...1.6 A setting range covers small motor loads like fractional-horsepower pumps, fans, and conveyor drives. Class 10 trip means it will ride through normal starting inrush on standard induction motors but still protect against prolonged overloads — the right balance for most general-purpose machinery. The manual-only reset (no auto-reset option) is a safety consideration: the relay stays tripped until someone physically presses the reset button, preventing unexpected restart after a fault.
Siemens 3RB1025-1NB0 Electronic Overload Relay, 0.4-1.6A, Cl
MPN3RB1025-1NB0
Siemens SIRIUS 3RB1025-1NB0 electronic overload relay, 0.4...1.6 A, Class 10, screw connection, manual reset only, size S0, for contactor mount.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Product details
Frequently asked questions
What is the 3RB1025-1NB0 used for?
It's an electronic overload relay for motor protection, rated 0.4 to 1.6 A with a Class 10 trip curve. It mounts directly on a SIRIUS contactor (size S0) and uses screw terminals with manual-only reset.
Where can I buy the 3RB1025-1NB0?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.
MPN
3RB1025-1NB0