LSiS MMS-LX 1a1b Side Auxiliary Contact Block 1NO 1NC

The LSiS MMS-LX 1a1b is a side-mounted auxiliary contact block engineered specifically for integration with LSiS motor protection circuit breakers. This device serves as a critical interface for monitoring the operational status of the circuit breaker, providing essential feedback to control systems or signaling devices. With its robust design and precise contact configuration, it ensures reliable performance in demanding industrial environments where circuit protection and status monitoring are paramount.

Advantages

The primary advantage of the LSiS MMS-LX 1a1b is its seamless mechanical and electrical compatibility with compatible motor protection circuit breakers, allowing for quick and secure side mounting. By providing both normally open and normally closed contacts, it offers versatile signaling options for various automation and control logic requirements. Its compact construction minimizes the overall footprint within electrical enclosures, while the high-quality materials used in its manufacturing guarantee long-term operational reliability and consistent switching performance.

Suitable for

• Industrial motor control centers
• Automated machinery and production lines
• Electrical distribution panels requiring status feedback
• Safety interlock circuits

When it may not be suitable

This auxiliary contact block is designed exclusively for specific LSiS motor protection circuit breakers. It is not compatible with circuit breakers from other manufacturers or different product series. Furthermore, it should not be used in applications exceeding its rated electrical and environmental specifications.

Key specifications

• Contact configuration: 1 Normally Open (NO) and 1 Normally Closed (NC)
• Mounting type: Side-mounted
• Compatibility: LSiS motor protection circuit breakers
• Function: Status signaling and control feedback

How to use

To install the LSiS MMS-LX 1a1b, ensure that the main power supply to the motor protection circuit breaker is disconnected. Align the auxiliary contact block with the designated side mounting interface on the circuit breaker housing. Secure the unit according to the manufacturer's mechanical attachment procedure until it clicks or is firmly fastened. Once installed, connect the control wiring to the appropriate terminals, ensuring that the wire gauge is compatible with the terminal capacity. Verify the operation by manually toggling the circuit breaker and checking for the corresponding state change in the auxiliary contacts using a multimeter.

What to consider before purchase

• Verify the exact model of your motor protection circuit breaker to ensure compatibility.
• Check the available space on the side of the circuit breaker within your control cabinet.
• Ensure your control system voltage and current requirements align with the contact ratings.

Usage recommendations

Always perform a functional test of the auxiliary contacts after installation and before putting the electrical system into full operation to confirm that the feedback signals correctly reflect the circuit breaker position.