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Siemens 3RU2916-3BJ21 — Overload Relays

Siemens 3RU2916-3BJ21 SIRIUS terminal cover, 45mm wide, clip

MPN3RU2916-3BJ21

Siemens SIRIUS terminal cover, 3RU2916-3BJ21, touch protection for ring cable lug connection, Size S00, 45mm wide, 9mm deep, clip-on.

Siemens 3RU2916-3BJ21 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RU2916-3BJ21 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationterminal cover
3RU2916-3BJ21 — Connection & Mounting
ParameterValue
Mounting / fastening methodclip-on
3RU2916-3BJ21 — Environmental
ParameterValue
Operating temperature-20 ... +60°C
Storage temperature-55 ... +80°C
3RU2916-3BJ21 — Mechanical
ParameterValue
Width45mm
Height14mm
Depth9mm
3RU2916-3BJ21 — Other specifications
ParameterValue
Design of the productshock protection for ring cable lug connection

Product details

The 3RU2916-3BJ21 is a touch protection cover from the Siemens SIRIUS range, designed specifically for the infeed side of a 3RU21 overload relay in Size S00. It clips onto the relay to cover the ring cable lug connection points, providing shock protection per the product designation. It mounts via clip-on fastening onto the overload relay body, adding no extra DIN-rail footprint — the cover is 45 mm wide and only 9 mm deep, matching the relay's own width. Height is 14 mm.

The clip-on design means no tools or additional fasteners are needed for installation. It sits on the line side of the 3RU21 overload relay, covering the ring-lug terminals that carry main circuit power.

Frequently asked questions

What are the key dimensions of the 3RU2916-3BJ21?

Width is 45 mm, depth is 9 mm, and height is 14 mm. These dimensions match the Size S00 3RU21 overload relay footprint.

Will the 3RU2916-3BJ21 fit a panel that uses a 3RT6023-1BW40 contactor?

The 3RU2916-3BJ21 is a terminal cover for a 3RU21 overload relay, not a direct accessory for the 3RT6023-1BW40 contactor. It clips onto the overload relay body, not the contactor. If the panel uses a 3RT6023-1BW40 contactor without a 3RU21 overload relay, this cover does not apply.

What compliance documentation is available for the 3RU2916-3BJ21?

The evidence does not list specific compliance certifications (UL, CSA, CE, RoHS, REACH) for this part. Standard Siemens SIRIUS accessories typically carry CE marking for the European market. For specific documentation, include the compliance request in your RFQ.

MPN
3RU2916-3BJ21