Fuse module LB8/0.3A/PTC AWZ577

Fuse module for alarm and CCTV systems

This fuse module, designated LB8/0.3A/PTC, is a reliable solution for power distribution in low-voltage alarm systems and CCTV monitoring systems. It allows for safe power supply to up to eight devices from a single source, providing independent protection for each circuit. This is particularly useful in installations where reliability and protection against short circuits or overloads are important.

Construction and functionality

The module accepts a supply voltage in the range of 10-30V DC, passing it to eight independent AUX1-AUX8 outputs. Each output is protected by a 0.3A PTC polymer fuse, which reacts to overcurrent by increasing its resistance and cutting off the power supply to the load. In addition, each output has a varistor protecting against voltage surges, which increases the safety of both the power supply and the connected devices. The operation of each fuse is indicated by an LED – the extinguishing of the L1-L8 LED indicates a problem with the given circuit.

There are two ways to connect the power supply: a DC 5.5/2.1 socket and a screw terminal (accepting wires with a cross-section of 0.41÷1.63 mm² / AWG 26-14). This flexibility allows for easy adaptation of the module to existing infrastructure. Mounting is done using a mounting rail or screws (3mm holes).

Applications and benefits

• Alarm systems: Ideal for powering sensors, sirens and other elements of the alarm system.
• CCTV monitoring: Excellent for separating the power supply for monitoring cameras, providing independent protection for each camera.
• Low-voltage installations: Works in any system requiring stable and safe low-voltage power supply.
• Protection against short circuits and overloads: PTC fuses and varistors provide comprehensive protection against equipment damage.
• Optical signaling: LED signaling facilitates quick identification of problematic circuits.
• Mounting flexibility: Possibility of mounting on a rail or with screws facilitates installation in various conditions.
• Wide input voltage range: Acceptance of voltages 10-30V DC ensures compatibility with most available power supplies.

The LB8/0.3A/PTC module is a solid and practical solution for professionals and end-users looking for a reliable way to distribute power in low-voltage systems. Its compact dimensions (124 x 43 x 21 mm) allow for easy placement inside enclosures or control cabinets. The device meets the requirements of Class II environmental standards and can operate at temperatures from -10°C to +50°C.