ECQLD3 - Locking Device

ECQLD3 - Locking Device

When you’re working inside a panel, the last thing you want is a breaker getting switched unintentionally while maintenance is underway. The Siemens ECQLD3 Padlocking Device is designed to help prevent exactly that. It’s a simple mechanical accessory that lets you secure a compatible breaker handle in place using a padlock, helping keep circuits in a fixed position during service work.

This 3-pole locking device is commonly used with Siemens QP, BL, BQ, and BQXD circuit breakers, making it a practical fit for many existing load centers and panelboards already installed in the field. Once in place, it supports controlled access to the breaker handle so it can’t be moved without removing the lock. In everyday terms, it adds an extra layer of control when equipment needs to stay safely isolated or intentionally held in a set position.

Because it’s designed specifically for Siemens breaker platforms, it integrates cleanly into existing panels without modification. That makes it especially useful for ongoing maintenance work in buildings where Siemens QP-series equipment is already in service.

Key Features and Benefits

• Designed for Siemens QP, BL, BQ, and BQXD breaker systems
• 3-pole padlocking design helps secure breaker handle position
• Helps prevent accidental or unintended breaker switching
• Supports lockout-style safety procedures during maintenance work
• Simple mechanical installation with compatible breaker frames
• Commonly used in commercial and residential panel environments
• Works with existing Siemens load center configurations
• Useful for service work, inspections, and controlled shutdowns
• Built for consistent mechanical fit in compatible systems

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: ECQLD3
  
• Product Type: Padlocking / handle locking accessory
  
• Compatible Series: QP, BL, BQ, BQXD
  
• Number of Poles: 3
  
• Application: Electrical distribution / load centers
  
• Connection Type: Plug-in system compatibility
  
• UPC: 783643538191
  
• Weight: 0.021 lb
  
• Packaging: 1 piece (typically sold in minimum quantities of 10)
  
• Compliance: UL 489 system application context
  
• Status: Active product
  

Material Compliance and Certifications

The ECQLD3 is part of Siemens’ UL-recognized breaker accessory lineup and is intended for use in compliant electrical distribution systems. It is designed to support installations that follow standard electrical safety codes and accepted maintenance practices for panelboard accessories.

Where It Works Best

• Commercial and residential load centers
• Siemens QP-series panelboards
• Facility maintenance and electrical shutdown procedures
• Light industrial distribution systems
• Electrical contractor service work
• Equipment inspection and servicing
• Panel upgrades and retrofit applications

For electricians and maintenance teams working with Siemens-compatible systems, the ECQLD3 provides a straightforward way to help keep breaker positions secure during service work—nothing complex, just a dependable mechanical safeguard when it’s needed.