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Black Box DIN rail redundant power supply unit with finger-safe terminals and LED indicator

Black Box Corporation

Black Box Corporation DIN Rail Industrial Redundant Power Supply 85-264VAC

SKU CH-RC3J-MG520

DIN-rail redundant power supply with universal 85-264 VAC input, LED status indication, finger-safe terminals and extended -4 to 158°F operating range

  • Product typeRedundant Power Supply
  • Redundant supply keeps equipment running if one unit fails
  • Universal 85-264 VAC input works worldwide without extra adapters
  • Operates from -4 to +158°F for harsh industrial environments
  • Finger-safe terminals prevent accidental contact during maintenance
  • Built-in short-circuit, overload and over-voltage protection safeguards connected devices
  • cUL and CE approvals confirm compliance with international safety standards

DIN-Rail Redundant Power Supply

This DIN-rail redundant power supply delivers continuous DC power for industrial control cabinets and automation systems. The universal 85-264 VAC input accepts global mains voltages without manual switching. An LED indicator confirms DC output at a glance. cUL and CE approvals support compliance in regulated environments.

Installation and Common Issues

The unit snaps onto standard DIN rail and uses finger-safe terminals for tool-less wiring. Technicians should verify polarity before energising because reversed connections can trip the internal protection. Overload or short-circuit events trigger automatic shutdown; the supply recovers once the fault is cleared. Ensure adequate airflow around the module to maintain the rated temperature envelope.

Pre-Order Checks

Confirm that your cabinet provides DIN-rail mounting space and that the incoming mains voltage falls within the 85-264 VAC range. The device also tolerates 120-370 VDC sources, though this path is not certified. Verify that the operating ambient temperature stays between -4 and +158 °F. Check that the required DC output voltage and current match the load specifications.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $320.99
Pricier than about 80% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeRedundant Power Supply

Questions about this item

How can I confirm the Black Box DIN Rail Industrial Redundant Power Supply is operating correctly once installed?

The front-panel LED shows DC power is present, so a lit LED after wiring confirms the unit is delivering output.

What ships with the Black Box DIN Rail Industrial Redundant Power Supply and what must I source separately?

The supply itself arrives with finger-safe terminals fitted; you must provide the 85-264-VAC or 120-370-VDC feed wiring and DIN rail mounting hardware.

Which input-voltage range should I choose for a panel fed from a 120-VDC battery bus?

The unit accepts 120-370-VDC (not certified for that range) in addition to 85-264-VAC, so the single model covers both AC and DC sources.

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