General Information

• Part Number: 0-52876 (52876)

• Manufacturer: Reliance Electric (Rockwell Automation)

• Product Type: VTGA DC Gate Driver / Disable Circuit Board

• Application: FlexPak / CardPak Series DC Drives (DC gate drive & disable control)

• Status: Obsolete; refurbished & surplus units available

• Mounting: Standard plug-in backplane edge connector (card rack)

Electrical Specifications

• Logic Supply: 24 VDC (drive internal control power)

• Signal I/O:

  • Input: Drive enable/disable commands, gate drive reference signals

  • Output: DC gate drive pulses, fault status signals

• Control Function: DC gate drive amplification, power device switching control, emergency disable

• On-board Components:

  • 1 × potentiometer (adjustable threshold)

  • 1 × red LED indicator (fault/status)

  • Discrete semiconductors, resistors, capacitors

• Isolation: Opto-isolated control inputs

• Protection: Overvoltage, overcurrent, short-circuit protection

Key Functions

1. VTGA Gate Drive: Precision DC gate drive for power semiconductor switching

2. DC Disable: Emergency drive disable & safe shutdown control

3. Signal Conditioning: Gate pulse shaping, level shifting & noise filtering

4. Fault Indication: LED for disable/fault status monitoring

5. Drive Interfacing: Direct interface with DC drive power stage

Mechanical Characteristics

• Form Factor: Standard CardPak plug-in PCB

• Dimensions: Approx. 330 × 280 × 75 mm (13 × 11 × 3 in)

• Connection: Rear gold-finger edge connector; front faceplate with LED/pot

• Weight: ~1.8 kg (4.0 lbs)

• Coating: Conformal coated (moisture/dust resistance)

Environmental Ratings

• Operating Temp: 0°C to +55°C

• Storage Temp: -20°C to +70°C

• Humidity: 10%–90% RH, non-condensing

Compatibility

• Compatible with Reliance FlexPak 3000, FlexPak Plus, CardPak DC drive series

• Direct replacement for original 0-52876 boards; no wiring modifications required