1. General Information

• Manufacturer: Reliance Electric (Rockwell Automation)

• Part Number: 0-51375 (also 0-51375-2 variant)

• Type: Sequencing / Relay Output Board

• Function:

  • Start/stop & interlock logic control

  • Fault alarm relay outputs

  • Timing & state sequencing for DC drives

• Status: Obsolete / Discontinued (repair / surplus only)

• Compatibility: SealPak & Reliance DC drive racks (50000-series family)

2. Electrical Specifications

• Voltage: 24 VDC ±10% (backplane)

• Power Consumption: ≤ 10 W

• Quantity: 8–10 relays (fault, run, ready, etc.)

• Contact Rating:

  • 125 VAC / 0.3 A (resistive)

  • 30 VDC / 1 A (resistive)

• Coil Voltage: 24 VDC

• Isolation: 1500 VAC (contact-to-logic ground)

• Inputs: 8 channels, 24 VDC logic, optically isolated

• Outputs: Mixed transistor + relay

3. Mechanical & Environmental

• Mounting: Standard SealPak slot-mount

• Dimensions (L×W×H): 279 × 216 × 178 mm (11.0 × 8.5 × 7.0 in)

• Weight: ≈ 1.2 kg (2.6 lbs)

• Operating Temperature: 0°C to 55°C (32°F to 131°F)

• Storage Temperature: -25°C to 65°C (-13°F to 149°F)

• Humidity: 5%–95% non-condensing

• Coating: Conformal coated PCB

4. Application

• Used in SealPak DC drive systems for metal, paper, mining, and general industrial applications.

• Works with:

  • 0-50010-R Main Power Supply

  • 0-50001-2R Main Control Card

  • 0-50004-R DC Amplifier Card

  • 0-50005-R Isolated I/O Card

  • 0-50040 Auxiliary Power & Signal Interface Card