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HUBBELL HBL420MI9W Watertight Interlock, 240V AC, 3-Phase, 20A, 3 Pole, 4 Wire - Watertight Interlocks
HUBBELLWatertight Interlocks

HUBBELL HBL420MI9W Watertight Interlock, 240V AC, 3-Phase, 20A, 3 Pole, 4 Wire

The HUBBELL Mechanical Interlock (MPN HBL420MI9W) is a watertight interlock rated for 240V AC, three-phase, 20 A, with 3 poles and 4 wires. This non-reverse-service device provides a secure, interlocked connection…

SKU 3G-OTH-14040

Brand
HUBBELL
Item
HBL420MI9W Watertight Interlock, 240V AC, 3-Phase, 20A, 3 Pole, 4 Wire
Part Number
HBL420MI9W
Category
Watertight Interlocks
Available to Order
Also known as:HBL420MI9WHUBBELL
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Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

HUBBELL
Manufacturer Part Number
HBL420MI9W
Reverse Service
No

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HUBBELL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HUBBELL Mechanical Interlock (MPN HBL420MI9W) is a watertight interlock rated for 240V AC, three-phase, 20 A, with 3 poles and 4 wires. This non-reverse-service device provides a secure, interlocked connection for industrial power applications.

Frequently Asked Questions

What is the HUBBELL Mechanical Interlock HBL420MI9W used for?

The HUBBELL Mechanical Interlock HBL420MI9W is used to provide a secure, interlocked power connection in industrial environments. It prevents plug insertion or removal while the circuit is live, making it ideal for watertight applications in manufacturing, processing, and heavy equipment where safety and reliability are critical.

What are the specifications of the HUBBELL Mechanical Interlock HBL420MI9W?

The HUBBELL Mechanical Interlock HBL420MI9W is rated for 240V AC, three-phase, 20 A, with 3 poles and 4 wires. It is a watertight, non-reverse-service device. The manufacturer part number is HBL420MI9W. This HUBBELL unit ensures a safe, interlocked connection for demanding industrial power applications.

Where to buy the HUBBELL Mechanical Interlock HBL420MI9W worldwide?

You can source the HUBBELL Mechanical Interlock HBL420MI9W through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply this HUBBELL watertight interlock to industrial buyers internationally.

How to install the HUBBELL Mechanical Interlock HBL420MI9W?

Installation of the HUBBELL Mechanical Interlock HBL420MI9W should follow the manufacturer's instructions and local electrical codes. Typically, mount the device in a watertight enclosure, connect the 3-phase, 4-wire supply to the designated terminals, and verify the interlock mechanism engages properly before energizing. Always de-energize the circuit before wiring.

Used in

Common applications for HUBBELL
Commercial lighting control — HUBBELL toggle switches (e.g., HBL1203STW) for 3-way switching in office corridors
Industrial maintenance — HUBBELL overhead cables (e.g., OC5MB-03) for tool balancers in assembly lines
Institutional wiring — HUBBELL rocker switches (e.g., DS115ST) for single-pole control in school classrooms
Facility upgrades — HUBBELL decorator wall plates (e.g., P262GY) for standard 2-gang outlet covers in commercial buildings
Electrical repair — HUBBELL panel terminal screws (e.g., HBLTSR) for replacing worn terminals in Series 16 devices
Modern interface — HUBBELL touch switches (e.g., WSS1277SS) for maintained 3-way control in hospitality settings
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HUBBELL Products

3G Electric supplies HUBBELL watertight interlocks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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