Bistable Relay ZAMEL PBM-01/24V — 24V AC/DC, bistable switching

Bistable relay ZAMEL PBM-01/24V is a latching relay designed for control circuits where a maintained contact state is required without continuous coil excitation. Compatible with both 24V AC and 24V DC supply, the device switches and holds its output contacts after a pulse on the coil, reducing energy consumption in applications that need stable on/off retention. The compact module is intended for installation in control panels and electrical enclosures where space-efficient, low-power switching is needed for lighting, automation, and remote control systems.

Advantages

The PBM-01/24V provides bistable switching that preserves the last commanded state after coil power is removed, saving energy compared with continuously driven relays. Dual compatibility with 24V AC and 24V DC simplifies integration into mixed-voltage control systems. Its latching mechanism reduces heat generation and extends operational life when used in applications with infrequent state changes. The relay is suitable for panel mounting and typical control-circuit wiring practices.

Suitable for

• Lighting control circuits requiring maintained on/off state
• Building automation actuators and remote switching
• Control panels and electrical cabinets with limited power budget
• Remote control systems where pulses are used to change relay state

Key specifications

• Operating voltage: 24 V AC or 24 V DC
• Contact type: bistable (latching) output contacts
• Mounting: panel/enclosure mounting compatible module
• Function: maintained contact state after coil pulse
• Application focus: low-power, energy-efficient switching for control circuits

How to use

Install the relay module according to standard electrical practices within a control panel or enclosure, ensuring appropriate isolation and secure terminal connections. Apply a short pulse of 24V AC or 24V DC to the coil to change the relay state; a subsequent pulse will toggle the contacts back. Follow electrical ratings of the connected loads and wire the output contacts to the controlled circuit. Ensure power is off during mechanical installation and wiring, and verify correct operation with test pulses before placing into service.

Usage recommendations

Use the relay where maintaining the last commanded state without continuous coil current is required. Design control logic to use momentary pulses for state change and avoid frequent switching beyond the relay's intended duty. Verify compatibility of contact ratings with the load type (resistive or inductive) and install appropriate protection such as snubbers or fuses where necessary.