ABB 1SAM201920R1011 MSHD-LTB IP64 Black 3-Times Lockable Defeatable 0-TRIP-I Handle for Power Circuit Breaker

The ABB MSHD-LTB (SKU: 1SAM201920R1011) is an IP64-rated black handle accessory for ABB power circuit breakers, offering three-times lockable operation, a defeatable mechanism, and clearly defined 0-TRIP-I switching positions. Designed for demanding industrial control panel environments, the MSHD-LTB provides secure, reliable manual control of the breaker's switching state while meeting international safety and environmental standards.

Technical Specifications

Certifications & Standards

• CE: Complies with European Union directives for electrical equipment safety and electromagnetic compatibility
• CSA: Certified by the Canadian Standards Association for use in North American markets
• REACH: Compliant with EU REACH regulation on chemical substances (SVHC)
• RoHS: Compliant with EU Restriction of Hazardous Substances directive, free from restricted materials
• WEEE: Registered under the EU Waste Electrical and Electronic Equipment directive for responsible disposal
• UKCA: UK Conformity Assessed marking for Great Britain market access post-Brexit

Applications & Use Cases

• Manual ON/OFF/TRIP switching of ABB MSHD-series compatible power circuit breakers in control panels
• Lockout/tagout (LOTO) applications requiring up to three padlock positions for electrical safety compliance
• Industrial automation and motor control centres (MCCs) where IP64 ingress protection against dust and water splash is required
• Machinery and plant equipment panels in manufacturing, energy distribution, and building services
• Applications where the defeatable feature allows the handle to be disengaged during maintenance

Frequently Asked Questions

• What does "defeatable" mean on the MSHD-LTB? The defeatable feature allows the handle mechanism to be disengaged from the breaker, enabling the breaker to be operated independently — useful during commissioning or maintenance procedures.
• How many padlocks can be applied to the MSHD-LTB? The MSHD-LTB supports up to three padlocks simultaneously, satisfying multi-person LOTO safety requirements.
• What IP rating does the MSHD-LTB carry? The handle carries an IP64 rating, providing complete protection against dust ingress and protection against water splashing from any direction.
• What switching positions are available? The MSHD-LTB provides three clearly marked positions: 0 (OFF), TRIP (tripped state indication), and I (ON).