SIEMENS
SIEMENS 3RH29211DA11 auxiliary contact block 1NO 1NC 600V AC
Side-mount auxiliary contact block adds one normally open and one normally closed contact rated 600V AC for SIRIUS 3RH2 and 3RT2 devices
- Side-mount block adds one normally open and one normally closed contact
- Screw terminals give secure wiring up to 600 V AC
- IP20 rating protects against finger contact with live parts
- Fits SIRIUS 3RH2 contactor relays and 3RT2 contactors
- Two contacts in a single compact unit save panel space
IEC auxiliary contact block 1NO 1NC
The SIEMENS 3RH29211DA11 is a side-mount auxiliary contact block designed for industrial control circuits. It provides one normally open and one normally closed contact rated at 600V AC for status feedback or interlocking duties. The unit carries an IP20 rating and uses screw terminals for secure wiring. It is intended for panel builders and maintenance engineers expanding contactor functionality.
Replaces worn or missing auxiliary blocks
This block restores or adds auxiliary contacts to SIRIUS 3RH2 contactor relays and 3RT2 contactors including NEMA Size 0 frames. The upgrade is worth it when existing contacts have failed or when additional signalling points are required for safety or automation logic. No other contactor series or relay families are supported by this specific block.
Fits side-mount slot on SIRIUS 3RH2 and 3RT2 units
The block mounts directly to the side of compatible SIRIUS contactors and contactor relays using the integrated mounting feature. Screw terminals accept standard control wiring without special tools. It frees up front-panel space by using the side position and leaves the coil terminals accessible. Builds requiring front-mount auxiliaries or different contact arrangements cannot use this block.
Highlights
- Side-mount block adds one normally open and one normally closed contact
- Screw terminals give secure wiring up to 600 V AC
- IP20 rating protects against finger contact with live parts
- Fits SIRIUS 3RH2 contactor relays and 3RT2 contactors
- Two contacts in a single compact unit save panel space
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
What contactor series does the 3RH29211DA11 mount on?
It mounts on the side of SIRIUS 3RH2 contactor relays and SIRIUS 3RT2 contactors.
How do you connect the control wires to the block?
Insert stripped wires into the screw terminals and tighten the screws; the block provides one normally open and one normally closed contact.
When should the auxiliary contact block be replaced?
Replace it if the IP20 housing is cracked, the screw terminals are stripped, or the contacts no longer switch reliably at 600V AC.
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