About Magnets
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Choosing an Electrical Switch
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Stepped Magnets
Press these magnets into place, or use them like a tongue and groove to align components. The stepped profile allows you to install them without adhesives or screws. Made of neodymium, these rare earth magnets are the strongest for their size.
Warning: Maximum pull ratings are based on direct contact with rust-free and unpainted iron plate. Variations in material condition will significantly reduce these ratings. Do not use for lifting over people.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Thick. | Wd. | Lg. | Stepped Dp. | Stepped Thick. | Max. Pull, lbs. | Max. Temperature, °F | Magnet Grade | 1-49 | 50-Up | |
Stepped In | ||||||||||
| 1/4" | 1/2" | 1/2" | 0.047" | 0.094" | 15 | 175° | N45 | 00000000 | 00000 | 00000 |
| 1/4" | 1/2" | 3/4" | 0.047" | 0.094" | 13 | 175° | N45 | 00000000 | 00000 | 0000 |
| 1/4" | 1/2" | 1" | 0.047" | 0.094" | 21 | 175° | N45 | 00000000 | 00000 | 0000 |
Stepped Out | ||||||||||
| 1/4" | 1/2" | 1/2" | 0.047" | 0.094" | 13 | 175° | N45 | 00000000 | 0000 | 0000 |
| 1/4" | 1/2" | 3/4" | 0.047" | 0.094" | 17 | 175° | N45 | 00000000 | 00000 | 0000 |
| 1/4" | 1/2" | 1" | 0.047" | 0.094" | 20 | 175° | N45 | 00000000 | 00000 | 00000 |
Encased Samarium-Cobalt Magnets
Strong and compact, these rare earth magnets resist corrosion and can handle higher temperatures than other rare earth magnets. A metal case protects the magnetic material.
Magnets with iron and brass cases concentrate and focus the magnetic field.
Warning: Maximum pull ratings are based on direct contact with rust-free and unpainted iron plate. Variations in material condition will significantly reduce these ratings. Do not use for lifting over people.
For technical drawings and 3-D models, click on a part number.
Smooth | |||||||
|---|---|---|---|---|---|---|---|
| Thick. | OD | Max. Pull, lbs. | Sets of Poles | Max. Temperature, °F | Magnet Grade | Each | |
Nickel-Plated Iron Case | |||||||
| 5/16" | 25/64" | 0.9 | 1 | 300° | SmCo 28 (2:17) | 00000000 | 000000 |
| 5/16" | 0.71" | 9 | 1 | 300° | SmCo 28 (2:17) | 00000000 | 00000 |
| 25/64" | 63/64" | 17 | 1 | 300° | SmCo 28 (2:17) | 00000000 | 00000 |
Brass Case | |||||||
| 0.787" | 0.236" | 1.8 | 2 | 390° | Sm Co16 (1:5) | 00000000 | 0000 |
| 0.787" | 0.315" | 4.8 | 2 | 390° | Sm Co16 (1:5) | 00000000 | 0000 |
| 0.787" | 0.394" | 8.8 | 2 | 390° | Sm Co16 (1:5) | 00000000 | 00000 |
| 0.787" | 0.512" | 13.2 | 2 | 390° | Sm Co16 (1:5) | 00000000 | 00000 |
| 0.787" | 0.63" | 27.5 | 2 | 390° | Sm Co16 (1:5) | 00000000 | 00000 |
| 0.984" | 0.787" | 50 | 2 | 390° | Sm Co16 (1:5) | 00000000 | 00000 |
Zinc-Plated Steel Case | |||||||
| 0.177" | 0.236" | 1.1 | 1 | 390° | Sm Co16 (1:5) | 00000000 | 0000 |
| 0.177" | 0.315" | 2.4 | 1 | 390° | Sm Co16 (1:5) | 00000000 | 00000 |
| 0.177" | 0.394" | 4.4 | 1 | 390° | Sm Co16 (1:5) | 00000000 | 00000 |
| 0.177" | 0.512" | 8.8 | 1 | 390° | Sm Co16 (1:5) | 00000000 | 00000 |
| 0.177" | 0.63" | 13.2 | 1 | 390° | Sm Co16 (1:5) | 00000000 | 00000 |
| 0.236" | 0.787" | 19.5 | 1 | 390° | Sm Co16 (1:5) | 00000000 | 00000 |
Press-Fit Encased Magnets
Press these magnets into a drilled hole so they are flush against the surface. A case protects the magnetic material. Made of neodymium, these rare earth magnets are the strongest for their size.
Styles 1 and 3 have a steel case that concentrates and focuses the magnetic field.
Style 2 includes one magnet with North pole exposed and one with South pole exposed.
Warning: Maximum pull ratings are based on direct contact with rust-free and unpainted iron plate. Variations in material condition will significantly reduce these ratings. Do not use for lifting over people.
For technical drawings and 3-D models, click on a part number.
| Style | Thick. | OD | Max. Pull, lbs. | Exposed Pole | Sets of Poles | Max. Temperature, °F | Magnet Grade | Includes | Pkg. Qty. | Each | |
Zinc-Plated Steel Case | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.337" | 0.472" | 4.4 | North | 1 | 180° | N42 | __ | __ | 0000000 | 00000 |
| 1 | 0.337" | 0.472" | 4.4 | South | 1 | 180° | N42 | __ | __ | 0000000 | 0000 |
| 3 | 1/4" | 3/8" | 2 | __ | 1 | 170° | N35 | No. 4 Screw, Steel Washer | __ | 0000000 | 0000 |
| Pkg. | |||||||||||
Plastic Case | |||||||||||
| 2 | 0.413" | 0.591" | 4.4 | __ | 1 | 180° | N42 | __ | 2 | 0000000 | 0000 |
Magnetic Latches
Magnetic force holds doors closed. These latches can often be found on audio/visual cabinets. Note: Maximum pull-strength rating given is based on installation with the furnished strike plate; pull strength may be different based on the application.
For technical drawings and 3-D models, click on a part number.
Push-to-Open Magnetic Latches
Close and open these magnetic latches with a push—there's no need for a handle. Magnetic force holds doors closed. Note: Maximum pull-strength rating given is based on installation with the furnished strike plate; pull strength may be different based on the application.
Each latch has a wraparound and flat strike plate.
For technical drawings and 3-D models, click on a part number.
Wraparound Strike Plate | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | Max. Pull Strength | Material | Ht. | Wd. | Dp. | For Cutout Dia. | For Panel Thick. | Ht. | Wd. | Flat Strike Plate Dia. | Mounting Fasteners Included | Each | |
Painted Steel Strike Plate | |||||||||||||
| 1 | Not Rated | Black Plastic | 9/16" | 7/16" | 1 1/16" | 13/32" | 3/16", 1/4" | 1" | 1 5/8" | 11/16" | No | 00000000 | 00000 |
Brass-Plated Steel Strike Plate | |||||||||||||
| 1 | Not Rated | Black Plastic | 9/16" | 7/16" | 1 1/16" | 13/32" | 3/16", 1/4" | 1" | 1 5/8" | 11/16" | No | 00000000 | 0000 |
Chrome-Plated Steel Strike Plate | |||||||||||||
| 1 | Not Rated | Black Plastic | 9/16" | 7/16" | 1 1/16" | 13/32" | 3/16", 1/4" | 1" | 1 5/8" | 11/16" | No | 00000000 | 0000 |
Magnetic Contact Alarm Switches
Wire contacts to an alarm system to alert when doors or windows are opened. Mount the magnet to the door or window and mount the switch to the frame. The alarm will activate when the magnet is pulled away by the opening door or window.
| Style | No. of Circuits Controlled | Switch Starting Position | Industry Designation | Switching Current @ Voltage | Max. Sensing Distance | Wire Lead Lg., ft. | Dia. | Lg. | Each | |
Nickel-Plated Brass Housing with Wire Leads | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Press Fit with Sealed Housing | ||||||||||
| C | 1 | 1 Off (Normally Open) | SPST-NO | 0.05 A @ 130 V DC | 0.68" | 1 | 0.38" | 0.62" | 00000000 | 000000 |