Basler MVC 232 Manual Voltage Control Module

The Basler MVC 232 is a manual voltage control module designed for remote or local operation of circuit breakers and contactors in low‑voltage distribution systems. Identified by part number 90 37000 103, this module accepts control voltages of 60 VAC or 55 VDC and is rated for continuous currents up to 20 A. It provides a simple and reliable means of manual override for automatic control systems.

Key Features

The module features dedicated open and close pushbuttons with mechanical interlocks to prevent simultaneous operation. It includes anti‑pump circuitry to avoid repeated closing on a fault. Status LEDs indicate control power and breaker position. The unit is housed in a compact, corrosion‑resistant enclosure suitable for panel or DIN‑rail mounting.

Technical Specifications

Control voltage: 60 VAC ±10% or 55 VDC ±10%. Continuous current rating: 20 A. Short‑time withstand: 200 A for 1 second. Operating temperature: -10°C to +60°C. Terminal wire size: up to 10 AWG. Dimensions: 120 x 80 x 60 mm. Weight: approximately 1.2 kg.

Operating Principles

When the close button is pressed, the module energizes the breaker closing coil provided that the anti‑pump logic permits it. The open button directly trips the breaker. Auxiliary contacts provide status feedback to remote systems. The module is designed for fail‑safe operation, with the open circuit being inherently default.

Applications

This module is used in motor control centers, generator control cabinets, and distribution panels. It is ideal for applications requiring manual intervention for maintenance, emergency isolation, or testing.

Installation and Configuration

Mount the module securely, connect the control power and breaker wiring as per the schematic. No software configuration is needed; all settings are hardware‑based. A functional test after installation is recommended.

Maintenance and Reliability

Routine maintenance includes visual inspection of terminals and pushbuttons. The module is built with high‑grade components for long service life. Periodic functional testing ensures continued reliability.

Conclusion

The Basler MVC 232 manual voltage control module offers a robust and straightforward solution for manual breaker control, ensuring operational flexibility in power distribution systems.