Apollo Series 65A 4″ 24V End-of-Line Relay Base (Part No. 45681-258USA)

The Apollo Series 65A 4″ 24V End-of-Line Relay Base (45681-258USA) is designed for use on 4-wire fire detection circuits, providing reliable end-of-line monitoring and relay functionality. The base incorporates two sets of changeover contacts and a power supervision relay, enabling effective circuit monitoring and control of ancillary equipment within conventional fire alarm systems.

The 45681-258USA continuously supervises the detector circuit and helps maintain system integrity by monitoring the power supply status. Its versatile relay configuration makes it suitable for a wide range of fire detection applications where dependable end-of-line monitoring is required.

Designed as part of the Apollo Series 65A range, the base offers straightforward installation with features that simplify wiring and ensure correct detector fitting.

Key Features

• 24V end-of-line relay base
• Designed for 4-wire fire detection circuits
• Two sets of changeover contacts
• Integrated power supervision relay
• Adaptor bar for compatibility with different back boxes
• Detector locking mechanism
• One-way detector fit
• Easy wiring connections
• Ground wire terminal included
• Compatible with Apollo Series 65A detectors

Typical Applications

The Apollo 45681-258USA is suitable for:

• Conventional fire alarm systems
• Commercial buildings
• Offices
• Schools and universities
• Healthcare facilities
• Retail premises
• Industrial buildings
• Applications requiring end-of-line supervision