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Rapid Online - Rapid Electronics Ltd.£52.15Visit shop Eltako 21110002 ES12-110 Impulse Switch 230V AC/DC 16A DIN Rail Mount
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The Eltako ESR12NP-230V+UC is a versatile impulse switch designed for DIN rail mounting, ideal for home automation and control systems requiring reliable switching. Its key benefit is the hybrid technology offering low switching noise and extended contact life, along with flexible control options. A potential caveat is the 150 mA maximum glow lamp current limitation on the 230V control input.
| Series | ESR12NP |
|---|---|
| Model Part Number | 21100102 |
| Brand | Eltako |
Zero-passage switching reduces electrical stress on the relay contacts and the connected load (like lamps) by switching them on or off only when the AC voltage waveform crosses zero. This significantly extends the lifespan of both the relay and the connected devices, especially energy-saving lamps.
Yes, the ESR12NP-230V+UC has a primary 230V AC control input and an additional, electrically isolated universal voltage (UC) input that accepts voltages from 8V to 230V AC/DC. This provides significant flexibility in how you connect and control the relay.
The fall-back delay function allows you to set a timer (from 2 to 120 minutes) after which the relay will switch off. This is useful for applications like stairwell lighting, where lights are turned on for a specific duration before automatically switching off. It can also provide a switch-off pre-warning.
The relay is rated for a maximum switching current of 16A at 250V AC. For incandescent lamps, it can handle up to 2300W. Always ensure your connected load does not exceed these ratings.
Operating modes (Surge-current switch, Switching relay, Surge-current switch with fall-back delay) are selected using the rotary switch located on the front of the device.
Yes, the ESR12NP-230V+UC features very low switching noise due to its hybrid technology and zero-passage switching, making it suitable for quiet environments where audible clicks are undesirable.
The glow lamp current refers to the minimum current required to keep certain types of lamps (like older fluorescent starters or some LED drivers) 'awake' or ready to ignite. The ESR12NP-230V+UC can handle up to 150mA for this purpose on its 230V control input.
Verify that the supply voltage is correctly connected and within the specified range (230V AC/DC). Check that the control input signal is present and at the correct voltage level (8-230V UC or 230V AC).
Ensure the correct function is selected via the rotary switch. If using the fall-back delay, confirm the time setting is appropriate. Check that the control signal is continuous if a sustained state is required (unless using impulse mode).
Check the supply voltage connection. If the LEDs indicate a blocked pushbutton (blinking), ensure the pushbutton is not stuck or shorted, especially when the ER function is not set.
Check for voltage fluctuations in the supply or control circuits. Ensure control wiring is properly shielded if in a noisy electrical environment. Verify that the selected function (e.g., impulse vs. sustained control) matches the intended operation.
Ensure the connected load does not exceed the rated switching current (16A) or power (2300W incandescent). Check for adequate ventilation around the module. Verify wiring connections are tight to prevent resistance heating.
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