SIEMENS
SIEMENS 3RH29111DA11 auxiliary contact block 1NO/1NC 690 V AC
Adds two side-mounted auxiliary contacts — one normally open and one normally closed — rated for 690 V AC on SIRIUS 3RT2 S00 contactors
- 1 NO + 1 NC contacts for versatile control circuits
- 690 V AC rating handles demanding industrial voltage
- Side-mount design fits SIRIUS 3RT2 S00 contactors directly
- Screw terminals give secure, tool-friendly wiring
- IP20 protection shields live parts from finger contact
Purpose and fit
The Siemens 3RH29111DA11 auxiliary contact block adds one normally open and one normally closed contact to SIRIUS 3RT2 contactors in frame size S00. It suits control-panel builders who need side-mounted signalling or interlocking on a NEMA size 0 starter.
Contact configuration
The block provides exactly two contacts rated at 690 V AC, with screw terminals for wiring. It mounts on the side of compatible contactors and carries an IP20 rating for finger-safe terminals.
Thermal and electrical behaviour
In normal operation the contacts switch low-energy control circuits with minimal heat rise and no audible noise. Power draw is limited to the coil circuit of the host contactor, and the IP20 housing protects against accidental contact.
Highlights
- 1 NO + 1 NC contacts for versatile control circuits
- 690 V AC rating handles demanding industrial voltage
- Side-mount design fits SIRIUS 3RT2 S00 contactors directly
- Screw terminals give secure, tool-friendly wiring
- IP20 protection shields live parts from finger contact
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
What does the 690 V AC rating mean when the block is installed in a starter?
It sets the highest voltage the auxiliary contacts can switch safely; the block is tested for 690 V AC operation.
How does the screw-terminal interface limit the wiring I can use?
Screw terminals accept solid or stranded conductors tightened by hand or tool; they do not support spring-cage or push-in wiring.
What does the side-mount design require on the contactor?
The block clips onto the side of a SIRIUS 3RT2 contactor frame size S00, NEMA size 0, adding 1 NO and 1 NC contact.
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