Model Definition

• 0-54379-1: Base part number (Auxiliary “M” Kit / PC Auxiliary Relay Board)

• Alternative ID: 14C219 (kit number)

• Status: Discontinued by manufacturer; no direct OEM replacement

• Cross-Reference: No fully compatible equivalent; replacement requires exact part match

Technical Specifications

• Form Factor: Compact custom PCB (approx. 120 × 80 mm)

• Weight: ~0.45 kg (1.0 lb)

• Relay: R40‑E0166‑2 general‑purpose relay, 24 VDC coil

• Terminal Block: Multi‑position screw terminals for field wiring

• Components: 1× relay, 2× diodes, terminal block, wiring header (labeled 139, 67, 39)

• Logic Voltage: 24 VDC control

• Operating Temp: 0 °C to +55 °C

• Mounting: Direct mounting inside rectifier stacks or auxiliary enclosures

Interfaces & Communication

• Internal Wiring: Header with pre‑wired leads (139, 67, 39) for drive internal connections

• External I/O: Screw terminals for 24 VDC control and relay contact outputs

• No Network Ports: Hardwired auxiliary board; no serial/Ethernet communication

Key Features

1. Auxiliary Relay Switching: Provides isolated 24 VDC relay contacts for interlocking and fault signaling

2. Compact “M” Kit Design: Small form factor for installation in tight rectifier stack spaces

3. Pre‑Wired Leads: Factory‑labeled wiring (139, 67, 39) simplifies installation

4. Surge Suppression: On‑board diodes protect relay coil from voltage spikes

5. Screw Terminal Connections: Easy field wiring and maintenance

Application

• Drive Systems: AutoMax DC Drives, MaxPak Series DC Drives (50–2000 HP)

• Subassemblies: Rectifier stacks, auxiliary control panels, braking modules

• Industries: Steel, paper, mining, cranes, conveyors, machine tools

• Function: Auxiliary relay control, interlocking, and fault signaling in DC drive systems

Compatibility

• Compatible Racks: AutoMax DCS Rack, MaxPak Drive Rack

• Voltage Compatibility: 230/460/575 VAC DC drives

• Power Range: 50–2000 HP (matches AutoMax/MaxPak drive ratings)

Critical Notes

• Function Distinction: Separate from 0‑54374 (PC Relay Board); this is a smaller “M” kit for rectifier stack use

• Replacement Challenge: No direct substitute; refurbished or NOS units are standard solutions

• Availability: Limited stock; longer lead times; pricing varies by condition and supplier