Dycon 24VDC 1A Power Supply Unit for Fire Door Retainers (D2401-A)

The Dycon D2401-A is a 24VDC 1A switched-mode power supply in Dycon's A-box housing. It is designed for powering magnetic fire alarm door retainers and door releases, and also suits access control and general 24VDC applications. A fault output lets it report problems to a fire alarm panel or other signalling device.

Key features

• 24VDC nominal switched-mode output designed for highly inductive loads such as magnetic door retainers and releases, removing the need for extra control relays
• Normally closed (NC) volt-free opto-relay output to signal unit status and faults locally or to a fire alarm panel
• AC status LED
• Dycon intelligent electronic fuses with automatic reset to reduce system downtime
• Anti-surge protection, intelligent and capacitive load switching, and snubbing

Technical specifications

• Part number: D2401-A
• Power supply classification: Type A, Ungraded, Environmental Class 2
• Input voltage: 195–265VAC, 50–60Hz
• AC input fuse: T3.15A, non-replaceable
• Output voltage: 24VDC nominal
• Maximum output current: 1A
• Output ripple: <100mV peak-to-peak at full rated output
• AC fault indication: if input falls below 175VAC ±25V
• Fault opto-relay rating: 60V at 100mA, contact resistance 16 ohms
• Automatic output reset time: 10ms to 18s (depends on type and duration of fault)
• Operating temperature: −10°C to +50°C
• Humidity: 95% non-condensing
• Housing: A-box, 235 x 170 x 85 mm (H x W x D)
• Weight: 1.10 kg