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This Siemens Auxiliary Terminal Block (3RV2901-1E) is designed for electrical professionals integrating auxiliary signaling into Siemens 3RV2 circuit breakers. Its key benefit is providing flexible 1 NC + 1 NO contact configurations for enhanced control and monitoring circuits. A minor caveat is its specific compatibility with the 3RV2 series, requiring careful verification before purchase. This block offers a plug-in, transverse design for easy installation and reliable performance within a -20°C to +60°C operating temperature range.
| Series | 3RV2 |
|---|---|
| Model Part Number | 3RV2901-1E |
| Brand | Siemens |
The primary function is to provide additional signaling contacts (1 normally open and 1 normally closed) that mirror the status of the Siemens 3RV2 circuit breaker, allowing for remote monitoring or integration into control systems.
No, this specific model (3RV2901-1E) is designed exclusively for the Siemens 3RV2 series of circuit breakers.
The contacts are rated for 60 V dc and 230 V ac at a maximum current of 1 A dc and 2.5 A ac, respectively.
It features a plug-in design that attaches directly to the side of a compatible Siemens 3RV2 circuit breaker. Installation typically involves aligning and pushing the block into place until it clicks.
No, the block is intended for signaling purposes and has limited current ratings (1 A dc, 2.5 A ac). It is not suitable for directly switching high-power loads.
The auxiliary terminal block can operate reliably within an ambient temperature range of -20°C to +60°C.
Yes, this product comes with a worldwide Siemens warranty.
Verify the auxiliary block is securely plugged into the 3RV2 circuit breaker. Check external wiring connections to the NO and NC terminals. Ensure the circuit breaker itself is in the expected state (tripped/closed) and that the control voltage/current is within the block's rating.
Ensure you are using a Siemens 3RV2 series circuit breaker and that it is designed to accept auxiliary contacts. Check for any obstructions or damage to the plug-in slots on the breaker or the block. Make sure the block is aligned correctly before applying pressure.
Confirm that the load current and voltage do not exceed the auxiliary block's ratings (1 A dc, 2.5 A ac, 60 V dc, 230 V ac). If the application requires higher ratings, a different auxiliary block or an intermediate relay may be necessary.
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