HONEYWELL 05701-A-0326 Power extension module

Product Description

HONEYWELL 05701-A-0326 is a 50W expansion power supply subunit dedicated for Honeywell System 57 Fire & Gas control system. It is used for power capacity upgrade of 16‑channel rack system, works in conjunction with main power unit 05701-A-0326, supplies regulated DC power for detector cards, relay interface boards and signal processing units inside the system.

It adopts plug‑in board‑level structure and inserts directly into backplane of System57 16‑slot rack. Equipped with input surge suppression, output over‑current, over‑voltage and short‑circuit protection. Hardware LED indicators show power status and fault alarm. OEM discontinued. Surplus‑new and tested‑refurbished units are available as critical replacement spares for legacy fire‑gas control systems. It improves system power redundancy and load capacity to support full‑loaded 16‑channel cards.

2. Product Parameters

• Model: 05701‑A‑0441
• Brand: HONEYWELL Analytics
• Product Type: Expansion Power Supply Subunit
• Applicable System: System 57 Fire & Gas Control System
• Power Rating: 50 W
• Compatible Rack: 16‑way PSU chassis rack
• Matched Main Power Module: 05701‑A‑0405
• Mounting: Back‑plane plug‑in card‑mount
• Protections: Over‑current, over‑voltage, short‑circuit, surge suppression
• Status Indication: LED for power‑on and fault diagnosis
• Load Devices: Detector cards, relay interface modules, analog signal boards
• Operating Temperature: ‑10℃ ~ +50℃
• Storage Temperature: ‑20℃ ~ +70℃
• Ingress Protection: IP20 (cabinet‑mount only)
• Product Status: OEM discontinued; surplus‑new / tested‑refurbished spares available
• Key Features: 50 W power expansion, 16‑channel system power upgrade, plug‑in card design, comprehensive power protection, LED status diagnosis, enhanced power redundancy, full compatibility with System57 fire‑gas hardware.

3. Product Application

05701-A-0326 expansion power module provides power expansion and redundant power supply for Honeywell System57 fire & gas monitoring system. Main application fields are listed below:

1. Petrochemical & Chemical Plants: Power capacity expansion for fully populated 16‑channel racks of toxic & flammable gas detection control system.
2. Oil‑gas Platform & LNG Site: Spare‑part replacement for legacy System57 F&G systems on offshore platforms and liquefied natural gas facilities.
3. Oil Refineries: Expand power capacity after adding extra channel cards for site gas alarm cabinets.
4. Power & Metallurgical Plants: Hazardous‑gas monitoring system, increase power load capability and realize power redundancy.
5. Pharmaceutical & Special Factories: Gas monitoring system for hazardous‑area locations, overhaul replacement for legacy System57 installations.
6. Industrial Retrofit & Maintenance: Add expansion power module to solve insufficient load capacity of original 16‑slot System57 rack.