Single push-button with indicator light (momentary) iPB-20-01-I 20A 1NC 110-230 VAC A9E18037

Functional signaling button for control circuits

This component from the Acti9 iPB series is a compact solution for installation in distribution boards, combining the function of circuit switching with visual status signaling. The device features one normally closed contact (1NC), which allows for safe control of circuits with a rated current of up to 20 A at a voltage of up to 250 V AC. A key feature here is the use of a spring-return mechanism – after being pressed, the button returns to its original position, making it an ideal choice as a start/stop or signaling button, rather than a maintained-state switch.

The built-in signal lamp, powered by a wide voltage range from 110 to 230 V AC, utilizes a modern LED with low energy consumption (maximum 0.3 W). The red lens ensures high signal visibility even in low light, making it easier for the operator to quickly locate the device status. The gray color of the button itself provides a neutral appearance, fitting most control cabinets and industrial distribution boards. The IP20 protection rating protects against accidental contact with live parts, but it should be noted that this device is not intended for installation in wet areas without additional shielding.

Application and installation in electrical systems

The device is designed for easy and quick mounting on a DIN rail. A width of 1 module allows for efficient use of space in the distribution board. The installation depth is approximately 50-66 mm (depending on the inclusion of the rear terminals), which requires appropriate depth in the control cabinet enclosure.

For installers, the behavior of the contacts during operation is important:

• Normally closed contact (NC): In the rest state, the circuit is closed; pressing the button opens it.
• Spring-return: The spring mechanism automatically resets the contact state after the button is released.
• Signaling: The lamp lights up independently of the switching contact state (usually connected in parallel to the voltage source), allowing for continuous monitoring of the presence of voltage in the control circuit.

Key electrical data for quick device selection include a switching current of 20 A and a rated voltage of 250 V AC. The lamp operates in a voltage range from 110 to 230 V AC and consumes a maximum of 0.3 W of power using an LED light source. The contact configuration is one normally closed contact (1 NC), and the signaling color is red.

Benefits from design and parameters

Choosing this model brings specific benefits both during installation and during system operation. The low power consumption of the LED means less load on control transformers or emergency power supplies – this is important when building large automation systems, where every watt matters for the energy balance. The use of an LED instead of traditional bulbs eliminates the risk of the lens heating up and extends the lifespan of the signaling element without the need for replacement for years of operation.

The spring-return mechanism eliminates the risk of leaving the device in a "pressed" state, which could lead to uncontrolled operation of machines or technological processes. This is a standard solution for emergency reset buttons or "pilot" signaling buttons. Additionally, the precise color matching (gray button + red lens) facilitates the identification of the device function in accordance with safety standards – red light often signals an alarm state or the presence of voltage, while the gray color of the body does not distract the operator. The device meets the requirements set for Schneider Electric modular equipment in terms of reliability and compliance with electrical safety standards.