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>Power Supplies and Enclosures

Power Supply Unit | 1.8 A | 3 A | 28 Ah

Nova

The EN54C-3A28 is a power supply unit tailored for fire alarm systems, optimized for robust performance under varied operational demands.

Key Features:

  • 1.8 A continuous output, 3 A instantaneous current
  • 85.2 W total power output
  • Charging current of 1.2 A, supporting up to 28 Ah battery capacity
  • Dimensions: 425 × 411 × 178 mm
  • Compliance with EN 54-4:1997+AC:1999+A1:2002+A2:2006, EN 12101-10:2005+AC:2007 standards

Specifications:

  • Mains supply: 230 V AC, 50 Hz
  • Efficiency: 89%
  • Output voltage: 22.0 V ÷ 27.6 V DC buffer, 20.0 V ÷ 27.6 V DC battery-assisted
  • Ripple voltage: 30 ÷ 150 mVp-p
  • Max. battery circuit resistance: 300 mΩ

Optional Configurations:

  • Compatibility with fuse modules: EN54C-LB4, EN54C-LB8
  • Supports sequential modules: EN54C-LS4, EN54C-LS8

Physical Specifications

  • Dimensions42.5x41.1x17.8 cm

Electrical Specifications

  • Continuous Output Current1.8 A
  • Instantaneous Operation Current3 A
  • Ripple Voltage30 ÷ 150 mVp-p
  • Mains Supply230 V AC, 50 Hz

Certifications

  • Standards ComplianceEN 54-4:1997+AC:1999+A1:2002+A2:2006
  • Standards ComplianceEN 12101-10:2005+AC:2007

Power Characteristics

  • Psu Power85.2 W

Performance

  • Efficiency Percentage89%

Battery Specifications

  • Battery Supported Capacity Max28 Ah

Protection Features

  • Short Circuit ProtectionMelting fuse (replacement required)
  • Thermal ProtectionTemperature-compensated battery charging

Electrical

  • Output Voltage Nominal27.6 V

Physical Characteristics

  • Enclosure ColorRed
  • Lock TypeKey-lock

Functional Features

  • Deep Discharge Battery ProtectionBattery disconnection at U < 20 V (±2 %)

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