1. Part Number

2. Brand

3. Type

4. Description

5. Basic Information

• Manufacturer: Reliance Electric (USA)

• Form factor: 19” rack-mount plug-in PCB (Cardpack chassis)

• Status: Obsolete / Discontinued（surplus, used, refurbished only）

• Faceplate: 1 × red LED (“1 S Relay energized”)；6 × screw terminals: 1/2 Start, 3/4 M Aux, 5/6 M Coil

• Weight: approx. 1.0 lb (0.45 kg)

• Revision: G

• Condition price: used ~$175–$799; refurbished ~$250

6. Function

• Controls start/stop interlock & auxiliary relay sequencing in Reliance drives

• Manages main/minor loop enable/disable logic

• Interfaces with motor coil & auxiliary contactors

• Provides relay status indication via front-panel LED

7. Specifications

• I/F: 6 screw terminals (Start, Aux, Coil)

• Indicator: 1 × red LED

• Mounting: 19” rack plug-in (Cardpack)

• Operating temp: 0°C to +55°C

• Storage temp: -40°C to +85°C

8. Compatible Drives

• Reliance MaxPak DC drives（primary application）

• VS spindle drives

• Legacy Cardpack control systems

9. Applications

• Industrial DC drive systems

• CNC machine tools

• Metallurgical & process equipment

• Conveyors & cranes requiring sequenced power-up/down