Step Relay 16A – 1 & 2 Module | Multi-Voltage | NO/NC/CO Configurations

The 16A Step Relay (also known as an impulse relay or bistable relay) is a DIN rail-mounted switching device that latches on or off with each control pulse – one pulse activates the relay, the next deactivates it. This makes it ideal for corridor and staircase lighting control, multi-point switching, and any application where a load must be toggled from multiple switch positions without wiring returns. Available in 1-module and 2-module widths, with a comprehensive range of contact configurations and coil voltages to suit AC and DC control circuits from 6VDC to 230VAC.

• Application: Staircase lighting, corridor switching, multi-point control, load toggling
• Current Rating: 16A
• Modules: 1-module (compact) and 2-module (extended contact) options
• Contact Configurations: 1NO+1NC, 2NO, 1CO, 2NO+1NC, 3NO+1NC, 2NO+2NC, 2CO
• Coil Voltages: 12VAC/6VDC, 24VAC/12VDC, 48VAC/24VDC, 130VAC/48VDC, 230VAC/110VDC
• Mounting: DIN rail

Key Features

• Bistable (latching) operation – holds state without continuous coil energisation, saving energy
• 1-module width for compact single-contact applications; 2-module for multi-pole configurations
• Wide coil voltage range – compatible with AC and DC control circuits from 6VDC to 230VAC
• Multiple contact configurations covering NO, NC, and changeover (CO) arrangements
• 16A rating suitable for lighting circuits, small motors, and general load switching
• DIN rail mounting – fits standard distribution boards and enclosures
• Suitable for multi-point switching with standard momentary pushbuttons

Typical Applications

• Staircase and corridor lighting with single or multi-point pushbutton control
• Hotel room and common area lighting switching
• Central ON/OFF control of lighting circuits from multiple locations
• Low-voltage control system load switching (24V, 48V DC bus systems)
• Building automation and energy management switching
• General load toggling in distribution boards and control panels

Technical Specifications

Configuration Guide

What's Included

• 1 x Step Relay in selected configuration and coil voltage

Please note: Pushbuttons, control wiring, DIN rail, and enclosures are not included. For multi-point switching, standard momentary pushbuttons wired in parallel are used with this relay.

Installation & Compatibility Notes

• Confirm your coil voltage matches your control circuit supply before ordering – AC and DC ratings are different and not interchangeable.
• Select 1-module for compact single-contact switching; 2-module where multi-pole isolation is required.
• Use momentary pushbuttons only – do not connect to latching switches as this will continuously energise the coil.
• Confirm the contact configuration (NO/NC/CO ratio) suits your circuit logic before ordering.
• Installation should be carried out by a suitably qualified electrician in accordance with SANS 10142.
• Verify your DIN rail and enclosure have sufficient space for 1 or 2 module width as required.

Warranty & Support

This product is supplied with the applicable manufacturer or supplier warranty, subject to correct installation, correct application, and warranty terms. Zisabo supplies quality electrical products with practical support to help customers choose the correct item for their application. If you are unsure which step relay configuration or coil voltage suits your circuit, contact us before ordering and our team will assist where possible.

Need help choosing? Contact Zisabo with your control voltage, number of switching poles required, and load type and we will help you select the correct variant.