The Siemens 3RU2126-1HB0-Z is a solid-state overload relay from the 3RU2 series, designed for contactor mounting. Both the main circuit and auxiliary circuit terminate with screw clamps, so this is a straightforward swap into an existing panel wired with ring or fork terminals. The manual-auto-reset selector lets you choose between latching on a fault (for attended restart) and automatic reclose (for remote or unmanned gear).
Siemens 3RU2126-1HB0-Z Solid State Overload Relay, Class 10,
MPN3RU2126-1HB0-Z
Siemens 3RU2 series, solid state overload relay, Class 10, screw main circuit, screw auxiliary circuit, manual-auto-reset, reusable packaging.
$36.83Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Weight | 0.00 kgs |
Product details
Frequently asked questions
Where can I buy 3RU2126-1HB0-Z and how do I get a price?
We source and quote this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ through this listing.
What is the closest pin-compatible alternative to 3RU2126-1HB0-Z in this component family?
Within the 3RU2 family, the closest sibling is the standard 3RU2126-1HB0 (without the -Z suffix). The -Z suffix typically designates a special version (packaging, customer-specific marking, or a minor factory variant). The base 3RU2126-1HB0 shares the same Class 10 curve, screw terminals, and mounting footprint — functionally identical for a replacement, though the packaging and any special markings differ.
MPN
3RU2126-1HB0-Z