Miniature Circuit Breaker Lockout Device - Pin Out Standard (POS) - 3 Pack

TRADESAFE Pin Out Standard miniature circuit breaker lockout devices help authorized employees secure compatible MCB switches during electrical maintenance, servicing, inspection, and repair. This 3-pack uses outward-facing stainless steel pins designed for compatible breaker openings with spacing up to 3/8", providing a purpose-built option for miniature single- and multi-pole circuit breakers that accept the POS configuration.

Each lockout combines an impact-resistant, nonconductive nylon body with stainless steel pins and a spring-loaded push-button mechanism. The red and black housing is compact enough for crowded electrical panels, while the tool-free design allows technicians to position and secure the device without a screwdriver or other installation tool. Each unit accepts one compatible LOTO padlock.

Miniature Circuit Breaker Lockout for Pin Out Standard MCBs

This miniature circuit breaker lockout is designed specifically for compatible MCBs that accept an outward-facing Pin Out Standard configuration. The two pins engage the appropriate openings in the breaker, allowing the device to be secured over the switch and restrict operation while maintenance or electrical servicing is being performed.

Part number: TSMCB1. Similar industry part numbers: 90845, S2390

Product specifications include:

• Quantity: 3 miniature circuit breaker lockout devices
• Pin configuration: Pin Out Standard (POS)
• Outward-facing stainless steel pins
• Compatible hole spacing: up to 3/8"
• Suitable for qualifying single-pole miniature circuit breakers
• Suitable for qualifying multi-pole miniature circuit breakers
• Impact-resistant thermoplastic nylon construction
• Nonconductive body
• Red and black finish
• Body height: 1-3/4"
• Padlock hole diameter: 9/32"
• One padlock position per device
• LOTO padlocks sold separately

MCB designs differ between manufacturers, so compatibility should be confirmed before ordering rather than relying only on breaker size or pole count. Verify that the breaker provides the required pin openings and that their spacing falls within the supported POS configuration.

MCB Lockout Device with Push-Button Installation

This MCB lockout device uses a spring-loaded push-button mechanism that opens and closes the outward-facing pins without requiring separate hand tools. Pressing the button allows the pins to be positioned in the compatible breaker openings; releasing it engages the device, after which a personal safety padlock can be attached through the integrated lock hole.

Installation and construction features include:

• Spring-loaded push-button mechanism
• Tool-free installation
• Outward-facing pin configuration
• Stainless steel locking pins
• Impact-resistant nylon housing
• Nonconductive construction
• Compact design for miniature breaker panels
• 9/32" padlock hole
• One compatible safety padlock per device
• Weather-resistant construction
• Chemical-resistant materials
• Tamper-resistant design

The push-button format is particularly useful for recurring electrical maintenance because the device can be deployed quickly without carrying an additional installation tool. With three identical units in the pack, maintenance teams can keep multiple compatible breakers isolated at the same time or distribute the devices between electrical kits and work areas.

Miniature Circuit Breaker Lockouts for Electrical Maintenance

These miniature circuit breaker lockouts are suited to electricians, maintenance technicians, industrial facilities, commercial buildings, and service teams working with compatible MCB panels. Their small footprint makes them practical for electrical boxes where available space around the breaker is limited, while the Pin Out Standard configuration provides a defined connection method for breakers with suitable openings.

Before installation, confirm that the breaker uses a compatible POS-style arrangement and that the pin spacing does not exceed the supported 3/8" limit. Press the push button, align the pins with the breaker openings, release the mechanism to seat the device, and then attach the required personal LOTO padlock before maintenance begins.

To ensure compatibility, check out our Breaker Lock Solution Guidelines to find the right TRADESAFE Breaker Lockout Device for your specific breaker model and number of poles.

Choose the TRADESAFE 3-pack when your electrical panels use compatible Pin Out Standard miniature breakers. Verify the breaker opening and spacing before use. Keep these compact MCB lockouts available in electrical maintenance kits for fast access when isolation is required.

OSHA-Compliant MCB Lockout Device

Compliance with the OSHA Standard for the Control of Hazardous Energy (Lockout/Tagout) (29 CFR 1910.147) is vital to the safety of every employee on site. That’s why we make sure that all of our products help workplaces remain OSHA-compliant.

TRADESAFE products are made with the requirements for lockout tagout devices in mind. These are the requirements pursuant to OSHA Standard 1910.147:

• Durable: Devices must be able to withstand exposure to the environment in which they will be used for as long as necessary.
• Standardized: Devices used in a facility must be standardized according to color, shape, or size.
• Substantial: Devices must be difficult to remove without the use of excessive force or techniques that are not typically used to remove the devices. They should also be able to prevent accidental removal.
• Identifiable: Devices must be able to identify the employee who applied them.
• Exclusive for Safety: Devices must not be used for any purpose other than controlling energy.

TRADESAFE: A Trusted USA-Based Partner in Lockout Tagout

• TRADESAFE is a USA-based company well-versed in OSHA regulations
• People-centered supplier of safety products
• High-quality products made of heavy-duty and durable materials
• Constant innovation and continuous adaptation to new standards

TRADESAFE is your partner in safety and we always keep the seriousness of that role in mind. That’s why all of our lockout tagout products are industrial-grade and meet regulatory standards. They are all ideal for use in the lockout of electrical and many other energy applications.

We don’t want to just be your supplier. We want to be your partner. For this reason, we approach things differently. Each and every day our team works to improve our products and the services we provide to the great people and businesses that put so much faith in us.

TRADESAFE is a USA-based company. This helps us stay up to date on the latest OSHA safety standards. We are inspired by the American worker and we are honored to help keep you safe from harm and hazards.