The Schneider Electric A9C30212 (Acti9 iTL series) is a modular DIN-rail mounted impulse relay (latching relay) designed for remote and decentralized switching of lighting and general electrical loads in residential, commercial, and industrial electrical distribution systems.It operates using a bistable mechanical switching mechanism, where each control pulse alternately changes the contact state (ON/OFF), enabling energy-efficient control without continuous coil energization.The A9C30212 impulse relay is widely used in lighting control circuits, push-button command systems, and centralized switching architectures, especially where multiple control points are required for a single electrical load.
| Electrical Ratings & Switching Capability | |
| Rated operational current: | 16 A |
| Rated operational voltage: | 24–250 V AC |
| Control voltage: | 48 V AC or 24 V DC |
| Number of poles: | 2P (2 NO contacts) |
| Insulation & Safety Characteristics | |
| Rated insulation voltage: | 440 V AC (Ui) |
| Impulse withstand voltage: | 6 kV (Uimp) |
| Environmental Operating Conditions | |
| Operating temperature: | -20°C to +50°C |
| Storage temperature: | -40°C to +70°C |
Frequently Asked Questions About A9C30212
The A9C30212 impulse relay utilizes a mechanically bistable switching mechanism that alternates contact states with each control pulse, enabling persistent ON/OFF state retention without continuous coil energization, which significantly reduces operational power consumption in lighting control systems.
The A9C30212 relay operates through pulse-actuated coil excitation that triggers a magnetic toggle mechanism, resulting in deterministic state inversion (ON ↔ OFF) with each electrical impulse applied to the control circuit.
The A9C30212 relay allows multiple pushbuttons to be connected in parallel across the control input, enabling decentralized command generation and scalable lighting control across large architectural or industrial installations.
The A9C30212 relay is engineered to respond to short-duration control pulses (typically in the millisecond range), ensuring reliable switching even under momentary or low-energy signal conditions generated by pushbutton interfaces.
The A9C30212 relay retains its switching state mechanically after actuation, meaning energy is only consumed during state transition events, eliminating the need for sustained coil power and improving system energy efficiency.
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