27.6vdc 1a Power Supply | 2401Sm-2

The 2401SM-2 is a compact and reliable 27.6VDC regulated power supply designed for fire systems, access control, door entry, and other 24V applications requiring battery-backed operation. Housed within a durable steel enclosure with multi-status indication, it delivers stable power output while incorporating integrated battery charging and advanced protection features.

Designed to accommodate up to two 12V 9Ah standby batteries, the 2401SM-2 ensures continued operation during mains failures, making it ideal for critical life-safety and security installations. Its modular design also allows for straightforward upgrades to monitored PSU configurations where fault reporting is required.

Key Features

• 27.6VDC regulated output
• 1A power supply capacity
• Supports up to 2 x 12V 9Ah batteries
• Modular design for future PSU monitoring upgrades
• Additional battery charging circuit
• Deep discharge protection
• Current limiting protection
• Short circuit protection
• Onboard tamper protection
• LED status indicators

Technical Specifications

Power Supply Unit

• Product Type:
  • Battery Backed Power Supply
• Output Voltage:
  • 27.6VDC Regulated
• Output Current:
  • 1A
• Battery Charging:
  • Integrated Battery Charging Circuit
• Battery Capacity:
  • Up to 2 x 12V 9Ah Batteries
• Input Supply:
  • 230VAC Fused Input
• Compliance:
  • EMC EN61000-6-1
  • EMC EN61000-6-3

Protection Features

• Deep Discharge Protection
• Current Limiting
• Short Circuit Protection
• Mains Transient Protection
• Full Electronic Protection
• Onboard Tamper Protection

Indicators

• Mains Status LED
• Battery Status LED
• Output Status LED

Construction

• Modular PSU Design
• Mild Steel Enclosure
• White Powder Coated Finish
• Multiple Cable Entry Points
• Separate Fused Mains Connections
• Supports 2 x 9Ah Batteries

Typical Applications

• Fire alarm systems
• Access control systems
• Door entry systems
• Emergency release systems
• Security installations
• Building management systems
• 24V locking systems
• Small commercial installations

Benefits

• Provides uninterrupted operation during mains failures
• Supports dual standby batteries
• Future-proof modular design
• Easy upgrade path to monitored PSU functionality
• Efficient switch mode technology
• Comprehensive protection features

Typical Uses

The 2401SM-2 is commonly used to power:

• Access control controllers
• Fire alarm interfaces
• Emergency release systems
• Magnetic locks
• Security equipment
• Building management devices
• Monitoring equipment