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Siemens 3RU2926-3BJ21 — Overload Relays

Siemens 3RU2926-3BJ21 SIRIUS terminal cover, 11 mm depth

MPN3RU2926-3BJ21

Siemens SIRIUS terminal cover, 3RU2926-3BJ21, for 3RU21 overload relay Size S0, shock protection for ring cable lug connection, clip-on, 11 mm depth, 45 mm width, 18 mm height.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RU2926-3BJ21 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationterminal cover
3RU2926-3BJ21 — Connection & Mounting
ParameterValue
Mounting / fastening methodclip-on
3RU2926-3BJ21 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-55 ... +80 °C
3RU2926-3BJ21 — Mechanical
ParameterValue
Width45 mm
Height18 mm
Depth11 mm
3RU2926-3BJ21 — Other specifications
ParameterValue
Design of the productshock protection for ring cable lug connection
Substance prohibitance10/01/2009

Product details

What this cover does on a 3RU21

The Siemens SIRIUS 3RU2926-3BJ21 is a clip-on terminal cover designed for the infeed side of a 3RU21 overload relay in Size S0. It provides shock protection specifically for ring cable lug connections, keeping live terminals behind a touch-safe barrier. The cover clips onto the relay body without tools — no DIN-rail footprint change, no extra wiring clearance needed beyond the relay's own envelope.

Dimensions and fit

At 11 mm deep, 45 mm wide, and 18 mm tall, this cover adds negligible depth to the assembly. The clip-on fastening method means it snaps onto the relay body directly — no screws, no brackets, no extra panel space consumed.

Environmental range and compliance

RoHS compliance is indicated by the substance prohibitance date of 10/01/2009, aligning with the EU RoHS directive scope.

Frequently asked questions

Where can I buy 3RU2926-3BJ21 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Current pricing and availability are confirmed at quote time — submit an RFQ for a firm price and lead-time estimate.

Will 3RU2926-3BJ21 drop into a panel specified around 3RH2122-1WB40 without rewiring?

No — these are different component classes. The 3RU2926-3BJ21 is a terminal cover for a 3RU21 overload relay (Size S0), while the 3RH2122-1WB40 is a coupling relay for auxiliary circuits (Size S00). They serve different functions and mount on different devices; the cover cannot substitute for the relay or vice versa.

What compliance documentation does Siemens provide for 3RU2926-3BJ21?

The part carries a substance prohibitance date of 10/01/2009, indicating RoHS compliance within the EU directive scope. As a SIRIUS catalog component, standard Siemens declarations of conformity and material compliance declarations are available upon request through the supply channel.

MPN
3RU2926-3BJ21