Model Number Explanation

05701: System 57 / 5701 series (gas detection control system)

A: Standard card assembly

0325: DC power input card (rack power supply)

Technical Specifications

Input Voltage: 18–32 VDC (nominal 24 VDC)

Max Output Current: 5 A (fuse-protected)

Power Consumption: ~1 W (card itself)

Fuse Rating: 5 A (internal, replaceable)

Terminals: Two-part terminal block (TB1) for easy removal without rewiring

Operating Temperature: -40°C to +70°C

Form Factor: 3U rack-mount card (19” subrack)

Dimensions: 112 × 25 × 102 mm (L×W×H)

Weight: ~0.13 kg

Certifications: CE marked

Key Features

Rack-wide power distribution: Feeds 24 VDC to all System 57 cards via backplane

Overcurrent protection: 5 A fuse safeguards the entire rack from short circuits

Hot-swap friendly: Two-part terminal block allows card removal without disconnecting field wiring

LED status indication: Front-panel LED for power-on status

Isolation: Input power isolated from internal logic for noise immunity

Applications

System Role: Primary power supply module for Honeywell System 57 controller racks

Industries: Oil & gas, petrochemical, power generation, hazardous area safety systems

Use Cases:

Powering System 57 gas detection control cards (e.g., 05701-A-0301, 0302)

Providing stable 24 VDC to rack-mounted I/O and communication modules

Safety system power distribution in explosive environments

Compatibility & Replacement

System Compatibility: Honeywell System 57 (5701 series 19” subracks)

Replacement Type: Direct drop-in replacement for 05701-A-0325

Legacy Status: Obsolete (EOL); available as refurbished/used stock