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Technical Tips

Motor Disconnect Switches

L7 Auxiliaries

June 2018

Disconnect Switch terminal temperature rating

What is the terminal temperature rating for the L11 disconnect switches? Are they rated for 60°C or 75°C wire?

L7 Auxiliaries

August 2017

L11 Disconnect Switch Fuse Mounting Torque Requirements

What are the fuse mounting torque requirements for the L11 fusible disconnects 100A to 800A?

L7 Auxiliaries

April 2017

L11 Disconnect Switch Mounting Directions and Reverse Feed

Can the L11 disconnect switches be rotated 180 degrees and mounted upside down, or sideways in a 90 degree orientation? Can you reverse or bottom feed these switches so that the incoming power is wired to the load side of the switch?

L11 Hardware

July 2016

What mounting hardware is included with L11 Disconnect Switches, sizes 30 to 60 Amps?

Are there replacement parts for hardware bags supplied with L11-C30-1753, L11-J30-1753, L11-N30-1753, L11-J60-1753, L11-J60-1753, L11-N60-1753 disconnect switches? Are there part numbers available for sale to order the mounting screws, the shaft set screw and the shaft clip or hair pin components included in the hardware bag supplied with these switches?

L11 Hardware

March 2016

What Mounting Hardware is included with L11 Non-Fused Disconnect Switches?

What Mounting Hardware Is Included With L11-NU100, NU200, NU400, NU600, NU800 and NU1200 Non-Fusible Disconnect Switches? Are replacement parts available? What hardware do I use to mount the switch in an enclosure?

L11 Handle Shafts

February 2016

L11 Handle Shaft Dimensions

What is the dimension of the square shaft which inserts into the L11 disconnect switches?

 

L11-TL Lug Kits

June 2015

What hardware is included with L11-TL Lug kits?

The hardware included with various L11 Disconnect Switches and Lug kits is dependent on the size switch and lugs ordered.

L11 Hinge to Handle Distance

February 2015

Minimum handle to hinge distance for L11 Disconnect Switches

What is the Minimum distance from the enclosure door hinge to the center of a L11 rotary handle shaft? The answer depends on what size L11 disconnect switch is being enclosed.

L7 Auxiliaries

November 2014

What are L7 Disconnect Switch auxiliaries used for?

What are LA7-P-D10, LE7-P-D10, LA7-16-P-D10 and LE7-16-P-D10 auxiliary contacts used for when attached to an L7 UL508 “At Motor Disconnect” Switch?

Chort Circuit Current Ratings

June 2014

Short Circuit Current Ratings (SCCR) and Control Circuits

Do the components in a control circuit have a short circuit current rating?

UL and NEC rules define which components in a control panel require a short circuit current rating.

 

Main Disconnect

April 2014

Can LA7/LE7 and LE2/LA2 switches be used as a main disconnect?

L2 and L7 switches are versatile, but should not be used for the main disconnect for several reasons.

L11 Hardware

March 2013

What Mounting Hardware is included with L11-J100…L800 Disconnect Switches?

The L11 Disconnect Switches for J Type and L Type Fuses, sizes 100 thru 800 Amps, each require different size hardware. Some hardware is not included with the switch due to the variety of mounting applications possible. Specific sizes of screws and box lugs are required for each size switch.

Manual Switching Devices

November 2001

Manual Switching Devices

Which control, load or fusible disconnect switches are best for your application?

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