Allen Bradley 1756-PB72 - Dual 24VDC Redundant Power - Industrial Control Rugged Hot-Swap Module

The Allen-Bradley 1756-PB72 ControlLogix® Power Supply delivers 72W (3A @24V DC) of rock-solid power for mission-critical automation systems. Designed for Rockwell's 1756 chassis, this dual-slot module features N+1 redundancy support and hot-swap capability to eliminate single points of failure.

Its industrial-grade aluminum housing operates flawlessly at -40°C to +70°C with 5g vibration resistance (IEC 60068-2-6), making it ideal for harsh plant environments. Integrated cooling fins enable fanless operation while embedded diagnostics provide real-time voltage/current monitoring. Compliant with ATEX Zone 2 and SIL 2 standards, it ensures uninterruptible power for safety controllers and critical I/O networks.

• Output Power: 72W (3A continuous @ 24V DC ±1%)
• Input Voltage: 85-265V AC (50/60Hz) or 120-250V DC (auto-ranging)
• Efficiency: 88% typical (EN 61204-3 compliant)
• Ripple Noise: <150mVpp (20MHz BW, EN 55032)
• Redundancy Tolerance: ≤5% load imbalance for parallel operation
• Protections: Short-circuit (hiccup mode), over-voltage (28V clamp), over-temperature (90°C shutdown)
• Isolation: 1500V AC input-to-output (IEC 61140)
• MTBF: >500,000 hours @40°C (IEC 61709)
• Certifications: UL 61010-1, ATEX II 3G Ex ec IIC T80°C Gc, SIL 2 (IEC 61508)

• Oil & Gas: SIL 2-rated safety shutdown systems (SIS) in API 14F Zone 2 facilities
• Pharmaceutical Manufacturing: Redundant power for bioreactor controls with 21 CFR Part 11 compliance
• Power Generation: Gas turbine control cabinets requiring <10ms ride-through during grid fluctuations
• Water Treatment: Flood-resistant plant PLCs in NEMA 4X enclosures
• Automotive Robotics: 24/7 welding cell controllers with vibration tolerance
• Mining Conveyors: Group I/II hazardous location control cabinets
• Continuous Process Lines: Critical batch reactor safety interlocks

• Redundancy Simplicity: Plug-and-play N+1 configuration with auto load-balancing (±0.5A)
• Space Optimization: Dual-slot design saves 40% chassis space vs. conventional PSUs
• Predictive Diagnostics: Reports output voltage (±0.2%) and current (±5mA) via Controller Tags
• Global Voltage Support: Universal input handles 85V AC brownouts to 250V DC battery backups
• Maintenance Efficiency: Live-swappable modules reduce MTTR to <2 minutes
• Lifecycle Economy: Fanless cooling extends service life to 10+ years (vs. 3-5 for fanned units)
• Safety Integration: SIL 2-compliant architecture for safety PLC redundancy

• Active Load Sharing: Multiple modules auto-distribute current with LED status indicators
• Hot-Swap Operation: Seamless replacement under full load using extraction handle
• Brownout Resilience: Maintains regulation during 15ms input interruptions
• Chassis Coordination: Integrates with 1756-PSCA power monitors via synchronization cable
• Fault Logging: Stores last 10 shutdown events (overload/temperature) in non-volatile memory
• Redundancy Visual Confirmation: Master/slave roles displayed on front-panel LEDs
• Studio 5000® Integration: Auto-discovers PSU health data via 1756 backplane
• Inrush Control: Soft-start limits peak current to 20A during cold start

Company Information

Xiamen ZhiCheng Automation Technology Co., Ltd is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts which make sure that all jobs are perfectly executed.

We specialize in PLC, Sensors, HIM, and Transmitters.

Best Supply Brands As Following:

• Bently nevada
• +GF+
• Rosemount
• ABB
• Allen-Bradley
• Foxobro

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