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Tameson UK£22.79Visit shop Siemens 3Rh2911-1Fc22 Auxiliary Switch Block 2No+2Nc - 3Rh29111fc22
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This Siemens Auxiliary Switch Block is designed for electricians and control system integrators needing to expand the contact capabilities of 3RT2 contactors and 3RH2 contactor relays. Its key benefit is providing a reliable and tool-free method to add 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts. A minor caveat is its specific compatibility with Siemens 3RT2 and 3RH2 series, requiring confirmation before integration into other systems. The block features screw terminals for secure connections and is part of the SIRIUS modular system for seamless integration.
| Series | SIRIUS |
|---|---|
| Model Part Number | 3RH2911-1FC22 |
| Brand | Siemens |
An auxiliary switch block provides additional contacts that mirror the state of the main contactor or relay. These contacts are used in control circuits for signaling, interlocking, or status indication.
This specific Siemens auxiliary switch block features 2 normally open (NO) and 2 normally closed (NC) contacts.
No, this auxiliary switch block is designed for front mounting specifically on Siemens 3RT2 contactors and 3RH2 contactor relays within the SIRIUS Innovation 3RH2 series.
The rated operational current (Ie) at AC-15, 230V is 6A. It also supports 6A DC and 10A AC with other ratings.
No, the block features a snap-on design that allows for tool-free installation.
The operating temperature range is from -25°C to +60°C.
The block uses screw terminals. You will connect your control circuit wires to the designated screw terminals corresponding to the NO or NC contacts you wish to utilize.
Ensure the main contactor or relay is properly actuated. Verify wiring connections to the auxiliary switch block and that they correspond to the correct NO or NC terminals. Check that the block is securely snapped onto the contactor/relay.
Confirm that you are using a compatible Siemens 3RT2 contactor or 3RH2 contactor relay. Ensure there are no obstructions on the mounting face of either the contactor/relay or the auxiliary switch block.
Check that all screw terminals are tightened securely. Inspect wiring for any signs of damage or corrosion and re-terminate if necessary. Ensure the environment is free from excessive vibration.
Setup: The auxiliary switch block is designed for front mounting onto compatible Siemens 3RT2 contactors or 3RH2 contactor relays. Align the block with the mounting points on the front of the contactor/relay and firmly press until it snaps into place. Connect wires to the appropriate screw terminals for the desired NO or NC contacts. Ensure the main power to the contactor/relay is de-energized before installation.
Compatibility: This auxiliary switch block is specifically designed for Siemens 3RT2 contactors and 3RH2 contactor relays. Verify the model numbers of your existing Siemens devices to ensure compatibility before purchase and installation.
Care: Keep the auxiliary switch block clean and free from dust and debris. Avoid exposing it to excessive moisture or corrosive environments. Regular visual inspection of connections and housing is recommended.
