The Advanced MXP-651 is a 5.0A 24V EN54-4 power supply and battery charger in a large enclosure with space for up to two 17Ah batteries. It suits any fire alarm installation that needs an EN54-4 24V supply (for example under the BS 5839 code of practice), as well as EN12101-10 smoke and heat control and AOV systems.
It is a high-efficiency switched-mode unit with intelligent battery charging, mains and battery monitoring and two independently monitored outputs. Deep discharge protection disconnects the battery from the load if the output falls below 21.6V during a prolonged mains failure, and exterior LEDs give quick status diagnostics.
Key features
- Certified by VdS to EN 54-4 and to EN12101-10
- Two independently monitored 27.6V DC outputs
- No output interruption when switching between mains and battery
- Load sharing for rapid charging or brief high-current peak loads
- Deep discharge protection at 21.6V
- Self-resetting battery fuse protection
- Exterior status LEDs
Technical specifications
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Part code: MXP-651 (large enclosure); MXP-651/D is the deep-enclosure version
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Input supply: 195-265V AC, 50Hz nominal
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Output voltage: 21.6V DC (Umin) to 28.8V DC (Umax)
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Output current: 5.7A continuous load (ImaxB), 4.0A battery charge (ImaxA), based on 24Ah batteries; values vary with the batteries connected and EN12101-10 functionality
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Inrush current: 25A max at 25°C, 230V AC for 10ms
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Mains fuse: T3.15A 20mm 250V AC HRC
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Dimensions (H x W x D): 420 x 400 x 80mm, space for up to 2 x 17Ah batteries
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Weight: 5.8kg excluding batteries, 18kg including batteries
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Material / colour: 1.2mm steel, RAL 7035
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Environment: Indoor use only, IP30
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Temperature: Operating -10°C to 40°C at 95% RH; storage -20°C to +80°C
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Fault output: Volt-free change-over contacts (SPDT) rated 1A at 30V DC
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Status indication: Mains, Battery Fault, PSU Fault, Diagnostic, Output 1 and Output 2
