C-Tec 24V 250mA Door Release Power Supply Unit
Summary
The C-TEC BF375P/PE series represents a comprehensive range of mains-derived power supply units specifically engineered to provide reliable 24V DC power to electromagnetic door retainers in fire safety applications. Both models deliver a maximum output of 250mA, making them capable of powering up to five electromagnetic door retainers rated at 50mA each.
The BF375P provides a cost-effective solution for integration with existing fire alarm systems, featuring multiple trigger inputs including failsafe hold off function, trigger release and local trigger capabilities. This model facilitates straightforward connection to fire alarm control panels, building management systems, timers, relays and other ancillary equipment.
The BF375PE advances the concept further by incorporating an integrated conventional fire detector circuit with fault monitoring. When used with two ActiV fire detectors, the BF375PE enables the creation of a cost-effective stand-alone automatic door release system, eliminating the need for separate fire alarm control panels in smaller applications. The BF375PE is also available as part of the comprehensive BF375PEK automatic door release system kit.
Both models feature compact design allowing mounting on standard 25mm UK double gang flush or surface back boxes, visual status indicators, and manual release buttons for immediate door release when required.
Features
- Mains derived 230V 50/60Hz power supply (both models)
- 24V DC output voltage range 21-28V (both models)
- Maximum 250mA output current capacity (both models)
- Manual release button on front fascia (both models)
- Mains on LED indicator (both models)
- Output triggered LED indicator (both models)
- Standard UK double gang mounting (both models)
- White PVC construction with light grey labelling (both models)
- IP40 protection rating (both models)
- Operating temperature range -5°C to +40°C (both models)
- Maximum 95% relative humidity tolerance (both models)
- Trigger release input requiring +5-27V DC at 5mA (BF375P only)
- Failsafe hold off input requiring constant +5-27V DC at 5mA (BF375P only)
- Local trigger input activated when taken to 0V (BF375P only)
- Integrated conventional fire detector circuit (BF375PE only)
- Fault monitored zone trigger inputs (BF375PE only)
- Compatible with ActiV fire detector range (BF375PE only)
- Stand-alone operation capability (BF375PE only)
- Switched and unswitched voltage outputs (BF375PE only)
- Available as part of BF375PEK system kit (BF375PE only)
FAQ
What is the difference between the BF375P and BF375PE models?
The BF375P is designed for integration with existing fire alarm systems and features multiple trigger inputs including failsafe hold off function. The BF375PE includes an integrated conventional fire detector circuit with fault monitoring, allowing it to work directly with fire detectors to create stand-alone automatic door release systems.
Which model should I choose for a new installation without existing fire alarm systems?
For new installations without existing fire alarm infrastructure, the BF375PE is recommended as it can operate as a complete stand-alone system when used with ActiV fire detectors, eliminating the need for separate fire alarm control panels.
Can both models power the same number of door retainers?
Yes, both the BF375P and BF375PE can power up to 5 electromagnetic door retainers, each rated at 50mA, with their 250mA total output capacity.
What is included in the BF375PEK kit?
The BF375PEK automatic door release system kit includes one BF375PE power supply, two ActiV fire detectors, two ActiV detector bases and one electromagnetic door retainer, providing a complete ready-to-install solution for stand-alone applications.
Can the BF375PE be used with existing fire alarm systems?
Yes, in addition to its stand-alone capability, the BF375PE can be connected to external fire alarm control panels, building management systems and other equipment via its trigger inputs, providing maximum installation flexibility.
Are both models suitable for outdoor installation?
Both models have an IP40 rating and operate between -5°C to +40°C, making them suitable for indoor applications. For outdoor use, additional weatherproof enclosure would be required.
Specifications
BF375P Technical Specifications
- Application Operation: Double gang mains derived power supply providing 250mA at 24V DC for powering up to 5 electromagnetic door retainers rated at 50mA each
- Mains Supply: 230V 50/60Hz
- Output: 250mA at 21-28V DC
- Indicators: Mains On; Output Triggered
- Controls: Trigger Release requires +5-27V DC at 5mA; Hold Off (failsafe) requires constant +5-27V DC at 5mA; Local Trigger triggers when taken to 0V; Manual release via red button on PSU fascia
- Connections: Hold off; Trigger Release; Local Trigger; +V & 0V output
- Product Dimensions: 147W x 87H x 39D mm
- Construction Finish: White PVC plate; Light grey label
- IP Rating: IP40
- Weight: 480g
- Operating Conditions Temperature: -5°C to +40°C. Max relative humidity: 95%
BF375PE Technical Specifications
- Application Operation: Double gang mains derived power supply with conventional fire detector circuit. Provides 250mA at 24V DC for powering up to 5 electromagnetic door retainers rated at 50mA each
- Mains Supply: 230V 50/60Hz
- Output: 250mA at 21-28V DC
- Indicators: Mains On (green); Output Triggered (red)
- Controls: Manual release via red button on PSU fascia
- Connections: Mains supply terminal, Unswitched +V, Switched +V (for door retainer connection), 2 x 0V, Zone Trig (for fire detector/manual release button connection, fault monitored), Trig (for remote equipment connection)
Additional information
| Weight | 0.48 kg |
|---|---|
| Detection Circuit | No, Yes |