1756-PAR2 | Allen-Bradley 85-265 VAC Redundant Power Supply Assembly

Allen-Bradley · HMIs & Displays

Description  The Allen-Bradley 1756-PAR2 is a ControlLogix redundant power supply kit designed to provide continuous backplane power in high-availability automation systems. The assembly consists of two 1756-PA75R power supplies, two 1756-CPR2 redundant power cables, and one 1756-PSCA2 chassis adapter. This bundled configuration ensures coordinated operation of dual power modules for maximum system uptime.     Technical Specifications  Condition New/Never Used Surplus Brand Allen-Bradley Category Power Supplies Part Number 1756-PAR2 Subcategory Redundant Power Supply Assembly Series ControlLogix Assembly Components Two 1756-PA75R power supplies; Two 1756-CPR2 cables; One 1756-PSCA2 chassis adapter Nominal Input Voltage 120/240 VAC Input Voltage Range 85–264 VAC Output Power 75 W (0…60 °C) Current Capacity 1.5 A @ 1.2 VDC; 4 A @ 3.3 VDC; 13 A @ 5.1 VDC; 2.8 A @ 24 VDC Max Inrush Current 20 A Isolation Voltage 250 V continuous; type-tested 3250 VDC for 60 s Hold-Up Time 2 cycles @ 50/60 Hz Annunciator Power Rating 240 VAC/240 VDC, 50 mA resistive Chassis Compatibility 1756-A4, A7, A10, A13, A17 Input Frequency 50/60 Hz Cable Length (1756-CPR2) 0.91 m (3 ft) Enclosure Style Open-type Manufacturer Rockwell Automation       Information About 1756-PAR2 The 1756-PAR2 belongs to the ControlLogix power family and provides a complete hardware set for implementing redundant power in Series B ControlLogix chassis. Its two 1756-PA75R power supplies operate in parallel through the 1756-PSCA2 chassis adapter, enabling seamless failover if one supply becomes unavailable. The included 1756-CPR2 cables synchronize and interconnect the redundant supplies to maintain consistent output and status information. Typical usage involves mission-critical environments—such as process control, safety systems, and continuous manufacturing—where uninterrupted controller power is essential. Key Features: Complete redundancy bundle: Includes dual power supplies, redundant cables, and chassis adapter. Wide AC input range: Operates from 85–264 VAC with nominal ratings of 120/240 VAC. 75 W output capability: Provides stable power for ControlLogix backplanes up to 60 °C. Multiple output voltages: Supports 1.2 VDC, 3.3 VDC, 5.1 VDC, and 24 VDC rails. High insulation rating: 250 V continuous isolation, type-tested to 3250 VDC for 60 s. Fast hold-up time: 2 cycles at 50 or 60 Hz to bridge brief power dips. Chassis compatibility: Supports 1756-A4, A7, A10, A13, and A17 enclosures. Annunciator support: Rated for 240 VAC/240 VDC, 50 mA for external status indication. The 1756-PAR2 delivers the reliability and precision required for redundant power architectures in critical ControlLogix applications.

Brand: Allen-Bradley · Category: HMIs & Displays

Key features

• Complete redundancy bundle: Includes dual power supplies, redundant cables, and chassis adapter.
• Wide AC input range: Operates from 85–264 VAC with nominal ratings of 120/240 VAC.
• 75 W output capability: Provides stable power for ControlLogix backplanes up to 60 °C.
• Multiple output voltages: Supports 1.2 VDC, 3.3 VDC, 5.1 VDC, and 24 VDC rails.
• High insulation rating: 250 V continuous isolation, type-tested to 3250 VDC for 60 s.
• Fast hold-up time: 2 cycles at 50 or 60 Hz to bridge brief power dips.
• Chassis compatibility: Supports 1756-A4, A7, A10, A13, and A17 enclosures.
• Annunciator support: Rated for 240 VAC/240 VDC, 50 mA for external status indication.

Specifications

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