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Galvanized steel bus drop safety spring with transparent finish, coiled form factor, 7.400 length

Hubbell Incorporated

Hubbell Incorporated 20302001 Bus Drop Safety Spring 500 lb 3/4 in video accessory

SKU CH-DECM-ESJ9Q

A bus-drop safety spring rated for 500 lb breaking strength with 2 3/4 in deflection at 40 lb

  • Product typeCable Management & Conduit
  • Overall length7.4
  • Product colorTransparent
  • Product weight0.2
  • Supports heavy cable runs with 500 lb breaking strength
  • Extends 2 3/4 in under 40 lb load for flexible routing
  • Galvanized steel construction resists corrosion in harsh environments
  • Compact 7.400 in length fits tight installation spaces
  • Lightweight 0.2 lb design reduces strain on mounting points

Hubbell Bus Drop Safety Spring 500 lb

The Hubbell 20302001 is a galvanised steel safety spring designed to support bus-drop cable runs. It has a breaking strength of 500 lb and a 3/4 in diameter. The unloaded length measures 7.400 in and the unit weighs .2 lb. It is supplied new for overhead cable management installations.

Installers needing 500 lb rated overhead support

This spring suits electricians and maintenance teams securing pendant drops or temporary lighting where a 500 lb breaking strength is specified. It is not for applications requiring a higher breaking strength or a different diameter attachment point. Buyers needing alternative load ratings or connection sizes should select a different model.

500 lb breaking strength decides fit

The single specification that determines suitability is the 500 lb breaking strength. Verify that the structural design calls for this exact rating before purchase. The spring deflects a maximum of 2 3/4 in at 40 lb, a figure that must match the installation's deflection allowance.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 85% of the 3,838 comparable items (median $41.99).

Specifications

Product
Brand nameHubbell Wiring Device-Kellems
Model name20302001
Product typeCable Management & Conduit
Product colorTransparent

Questions about this item

What mounting hardware is required to attach the 3/4 in spring to an overhead support?

The spring has a 3/4 in diameter and 500 lb breaking strength, so the installer must supply a compatible 3/4 in eye bolt, beam clamp or threaded rod rated for at least 500 lb.

Can the 500 lb spring be used with lighter cable bundles that previously used a lower-rated spring?

Yes, the galvanized-steel spring deflects up to 2 3/4 in at 40 lb, so lighter loads will simply produce less deflection while the 500 lb rating provides extra safety margin.

How can I verify the spring is functioning correctly after installation?

Apply the expected cable load and measure the stretch; at 40 lb the spring should extend about 2 3/4 in from its 8 1/4 in no-load length, confirming proper operation.

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