Bistable Relay ZAMEL PBM-02, 16A, 230V AC

The ZAMEL PBM-02 bistable relay is a latching switching module rated for 16 A load current and designed to operate on a 230 V AC supply. It changes the contact state on a control pulse and retains that state without continuous coil power, making it appropriate for installations where energy-efficient switching and state retention are required. The compact housing allows DIN-rail or panel mounting and integration into lighting circuits, motor control lines, and building automation systems.

Advantages

The bistable design maintains contact position after a control pulse, eliminating the need for continuous coil energisation and reducing standby power consumption. With a 16 A switching capacity at 230 V AC it supports common lighting and small motor loads. The relay’s compact form factor and standard mounting options simplify installation in distribution boards and control panels. Pulse control operation reduces wiring complexity where momentary inputs or push-buttons are used.

Suitable for

• Lighting circuits where latching switches are preferred (residential and commercial)
• Motor control for small pumps, fans or shutters with appropriate protection
• Building automation systems requiring remembered switch state after power interruptions
• Control panels and DIN-rail installations with limited space

When it may not be suitable

This relay is intended for AC mains environments and is not suitable for low-voltage DC control circuits without confirming compatibility. It is designed for switching loads up to 16 A; for higher current or inductive loads with significant inrush, a different relay or contactor with appropriate ratings should be chosen. Where rapid switching cycles or very high switching frequencies are needed, a solid-state solution may be more appropriate.

Key specifications

• Nominal supply voltage: 230 V AC
• Maximum switching current: 16 A
• Operating principle: bistable (latching) relay, pulse-controlled
• Mounting: DIN-rail or panel mounting compatible form factor
• Typical applications: lighting control, motor control, building automation

How to use

Install the PBM-02 in a suitable enclosure on a DIN-rail or secure to the panel following local electrical regulations. Connect the mains supply and load conductors to the relay’s input and output terminals as indicated by the manufacturer’s wiring diagram. Use momentary push-buttons or a pulse-type control signal to toggle the contact state; the relay will retain its last position after the pulse ends. Ensure protective devices such as circuit breakers and appropriate fuses are fitted in the supply and load circuits before commissioning.

What to consider before purchase

• Verify that the application voltage is 230 V AC and that expected load current does not exceed 16 A
• Confirm suitability for the type of load (resistive, inductive, motor) and include appropriate protection for inductive loads
• Ensure physical dimensions and mounting type fit your distribution board or panel layout
• Check compatibility with existing control inputs (momentary switches, push-buttons, or pulse outputs)

Usage recommendations

For reliable operation, pair the bistable relay with proper overload protection and, for inductive loads, use RC snubbers or surge protection as recommended for the load type. Test the control pulse length and wiring before finalising installation to ensure consistent switching behaviour.