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MASTER LOCK Style Miniature Breaker Lockout: Pin-Out, For 120/277V AC Volt - Pin-Out Circuit Breaker Lockouts
MASTER LOCKPin-Out Circuit Breaker Lockouts

MASTER LOCK Style Miniature Breaker Lockout: Pin-Out, For 120/277V AC Volt

The MASTER LOCK S2391 Pin-Out Circuit Breaker Lockout is a DIN-style device for 120/277V AC applications, designed for use with a 7/16 in breaker featuring a toggle opening. It does not include a cable tie slot.

SKU 3G-OTH-554926

Brand
MASTER LOCK
Item
Style Miniature Breaker Lockout: Pin-Out, For 120/277V AC Volt
Category
Pin-Out Circuit Breaker Lockouts
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Technical Specifications

MASTER LOCK
Manufacturer Part Number
S2391
Type
For 120/277V AC Volt, S2391
For Voltage
120/277V AC
For Use With
7/16 in Breaker with Toggle Opening
Includes Cable Tie Slot Final
No
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MASTER LOCK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MASTER LOCK S2391 Pin-Out Circuit Breaker Lockout is a DIN-style device for 120/277V AC applications, designed for use with a 7/16 in breaker featuring a toggle opening. It does not include a cable tie slot.

Frequently Asked Questions

What is the MASTER LOCK S2391 Pin-Out Circuit Breaker Lockout used for?

The MASTER LOCK S2391 is a DIN-style lockout device used to isolate 120/277V AC circuit breakers with a 7/16 in toggle opening during maintenance. It helps comply with lockout/tagout safety procedures in industrial electrical panels, preventing accidental re-energization.

What are the specifications of the MASTER LOCK S2391?

The MASTER LOCK S2391 is rated for 120/277V AC and fits breakers with a 7/16 in toggle opening. It is a pin-out type DIN-style lockout with no cable tie slot. The manufacturer part number is S2391.

Where to buy the MASTER LOCK S2391 worldwide?

3G Electric supplies the MASTER LOCK S2391 Pin-Out Circuit Breaker Lockout to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this safety lockout device.

How to install the MASTER LOCK S2391 on a breaker?

To install the MASTER LOCK S2391, align the lockout over the breaker toggle opening (7/16 in) and push the pin through the toggle hole. Secure with a padlock to prevent operation. Always follow your facility's lockout/tagout procedures and verify isolation before work.

Used in

Common applications for MASTER LOCK
Locker security in industrial facilities — Master Lock built-in deadbolt lock (MPN 1710) for employee lockers
Equipment access control on job sites — Master Lock Bluetooth padlock (MPN 4400ECWWG) for tool cribs and gates
Key management for fleet vehicles — Master Lock lockbox (MPN 5440ECWWG) securing vehicle keys at depots
Padlock for outdoor storage units — Master Lock long shackle combination padlock (MPN 175LH) for hasps on sheds
Keyless entry for maintenance panels — Master Lock scrolling combination padlock (MPN 975DCOM) on electrical enclosures
High-security locking for warehouse cages — Master Lock stainless steel combination padlock (MPN 1500LF) for corrosion resistance

MASTER LOCK Products

3G Electric supplies MASTER LOCK pin-out circuit breaker lockouts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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MASTER LOCK DIN Style Miniature Breaker Lockout: Pin-Out, For 120/277V AC Volt (MPN S2390). Key specifications — For Voltage: 120/277V AC; For Use With: All Master Lock and American Lock Safety Padlocks and Lockout Hasps; Brand: MASTER LOCK; Includes Cable Tie Slot_Final: No.
MASTER LOCK
MASTER LOCK DIN Style Miniature Breaker Lockout: Pin-Out, For 120/277V AC Volt (MPN S2390). Key specifications — For Voltage: 120/277V AC; For Use With: All Master Lock and American Lock Safety Padlocks and Lockout Hasps; Brand: MASTER LOCK; Includes Cable Tie Slot_Final: No.