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Rapid Online - Rapid Electronics Ltd.£30.35Visit shop Eltako 21200030 Electromechanical Switch 230V 10A 2300W DIN Rail
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The Eltako 21200030 is a versatile impulse relay designed for electrical distribution systems, offering reliable control and surge protection for 230V AC applications. It is ideal for electricians and system integrators requiring precise voltage monitoring and field rotation detection. A key caveat is its specialized nature, requiring a good understanding of electrical systems for optimal installation and configuration.
| Series | S12 |
|---|---|
| Model Part Number | 21200030 |
| Brand | Eltako |
The impulse relay features a 1 CO (changeover) contact rated for a maximum of 10A at 250V AC. It can support incandescent lamps up to 2000W and 230V LED lamps up to 200W.
Yes, the relay operates on a 230V AC supply, which is common in single-phase systems. However, the rotating field monitoring feature is only applicable to 2- and 3-phase operations.
The operate and dropout voltages (U1, U2) are set using the lower rotary switch on the front of the device. Refer to the product manual for specific voltage values and VDE standards.
A steady LED typically indicates that the relay is powered and operating normally. A rapid flash signals an error like incorrect polarity or a missing phase conductor. A slow flash during the release delay time indicates the delay period is active.
The release delay (RV), adjustable from 0.1 to 8 seconds, prevents the relay from switching off immediately during brief power interruptions or voltage fluctuations, adding stability to the controlled circuit.
The Eltako 21200030 has a very low standby loss of only 0.8 watts.
Yes, it is specifically designed to monitor the rotating field (clockwise) in 2- and 3-phase operations, which is crucial for ensuring correct motor direction and preventing damage.
Verify that the L1 and N terminals are correctly connected to a live 230V AC source. Check the circuit breaker or fuse protecting the supply line.
This indicates wrong polarity or a missing phase conductor (in 2- or 3-phase operation). Check all phase connections and ensure correct wiring.
Review the set operating/dropout voltages and release delay. Ensure they are appropriate for the connected load and supply stability. Check for transient voltage spikes.
Confirm that the device is correctly wired for 2- or 3-phase operation and that all phase conductors are connected to the appropriate input terminals. Ensure the rotating field is indeed clockwise.
Check the control voltage supply to the relay. Ensure the input conditions (voltage, rotating field) meet the requirements for the contact to activate. Verify the load connected to the CO contact does not exceed 10A/250V AC.
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