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Small rectangular Siemens suppressor module, grey plastic housing, two terminal blocks, model 3RT29161BC00

SIEMENS

SIEMENS 3RT29161BC00 Suppressor 48-127V AC 70-150V DC

SKU CH-H6XB-R7YTW

Protects S00-frame 3RT2 contactors with a built-in varistor across 48-127 V AC and 70-150 V DC

  • Protects contactors from voltage spikes
  • integrated varistor absorbs transients
  • rated for 48-127 V AC and 70-150 V DC
  • fits S00 frame 3RT2 series contactors

SIEMENS 3RT29161BC00 suppressor for contactors

This new surge suppressor protects SIEMENS 3RT2 series contactors with S00 frame size. It handles 48-127V AC and 70-150V DC using an internal varistor. The accessory limits voltage spikes that occur when contactor coils de-energise. It is intended for control-panel builders and maintenance engineers who need coil protection on these specific starters.

Simple DIN-rail mounting alongside the contactor

Installation clips onto the front of the compatible contactor without tools or wiring changes. The suppressor seats directly on the coil terminals, so no extra panel space is required. Problems arise when the device is fitted to a contactor with a different frame size or voltage rating, because the terminals will not align and the varistor voltage will not match the coil. Buyers who need protection for larger frame sizes or different voltage bands cannot use this part.

How it compares

Measured against everything we stock in Contactors, Relays & Motor Starters, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 88% of the 1,098 comparable items (median $61.99).

Specifications

Product
Brand nameSIEMENS

Questions about this item

How can I verify the 3RT29161BC00 suppressor is working after installing it on a 3RT2 contactor?

After fitting the suppressor onto the S00 frame contactor, energise the coil and confirm the contactor switches cleanly without arcing or excessive coil noise, indicating the varistor is clamping transients within the 48-127V AC and 70-150V DC range.

What comes in the box with the 3RT29161BC00 and do I need any extra parts to mount it?

The package contains the surge suppressor with integrated varistor only; no additional hardware is required because it snaps directly onto compatible 3RT2 series S00 frame contactors.

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