The Wescom / Charles Industries 3609-01 is a -48VDC Power Supply Unit engineered for telecommunications and industrial applications requiring stable, regulated power distribution across multiple voltage rails. This PSU provides four regulated output voltages (±7.5V, ±12V, and -48V) with fused circuit protection and integrated alarm/status monitoring for mission-critical T1 channel bank systems.
Technical Specifications
Electrical
• Input Voltage: -48VDC operation
• Output Voltages: -7.5V, +7.5V, -12V, +12V, -48V
• Fuses: (4) rated at 2A, 2A, 3.5A, and 7.5A
• Input Connections: -/+ 7.5V, -/+12V, -48V, and GRD
Indicators & Controls
• Status LEDs: ALM (Alarm), ACO (Audible/Visual Alarm), PWR ON
• Interface: TEST SET T-48V S-GRD Connection
• Push Button: ACO control
Physical
• Approximate Shipping Weight: 15 lbs
– Key Features
• Hot-swappable voice/data channel units with common equipment support
• Soft-start circuitry limits inrush current during power-on
• Input reverse-voltage protection prevents damage from polarity errors
• Output over-voltage sensing and clamping protects connected systems
• Overload shutdown with automatic recovery guards against output short circuits
• Fault isolation provides targeted protection across output channels
• Designed for heavy traffic, mission-critical applications with high availability requirements
– Typical Applications
• T1 channel bank management and distribution
• Low-speed synchronous/asynchronous data terminal operation
• High-speed synchronous data terminal support
• Single-ended testing and alignment for PCM transmission
• Local VF and signaling channel unit testing
• End-to-end level measurements and equalizer alignment in special service channels
– Compatibility & Integration
Part of the Charles Industries 360 Series Channel Banks. Supports hot-swap architecture for modular channel and common equipment configurations.
