7AM Protector
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Each 7AM rating has a bimetal disc designed and manufactured for that specific temperature rating. Each individual device is then calibrated and checked for opening temperature. This results in precise operating characteristics necessary to achieve consistent, reliable performance over the required life cycle.

This high level of performance is obtained through Sensata Technologies traditional emphasis on quality. We put an emphasis on the supplier’s responsibility and integrate modern statistical techniques into the production and quality assurance processes. More than twelve different checks are made during the manufacturing process.

The operating principle of the 7AM is both simple and effective. At the heart of the proctor is a Klixon bimetal snap–action disc. When the temperature of this disc reaches its pre-calibrated temperature it snaps open, resulting in an open circuit. This temperature is reached during a fault condition, caused by either an increase in ambient temperature, an increase in current flowing through the discs, or a combination of both. After the 7AM breaks the circuit, the system cools and the 7AM automatically resets, allowing power to be restored to the circuit.

Site Updated February 16, 2018

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Klixon® 7AM series
Lighting, electrical, thermal, battery, motor protection

Over 3 billion sold
Compact, miniature size
UL, CSA, KEMA (ENEC) approvals
Individually temperature checked on modern, custom-designed equipment
Positive make and break with Klixon snap–action disc
Repeatable temperature performance over life
Gasketed steel case suitable for most impregnation processes
Current and temperature sensitivity for maximum design flexibility and application
Wide selection of leads and insulating sleeves

The Klixon 7AM delivers the maximum protection in the smallest package at an excellent price. It’s the most reliable on the market, backed by the leading innovators in protection technology.

Each 7AM temperature rating has a bimetal disc specifically manufactured for that rating. Each device is then calibrated and checked for opening temperature. This results in optimum snap–acting open and reset characteristics necessary to achieve consistent performance over the required cycle life.

The Klixon bimetal disc welded in a steel can provides excellent thermal sensitivity and maximum protection properties.

Click here for specifications and approvals.

Lighting Protection

The 7AM thermal protector is the world leader for protection in lighting applications. Offering extremely high reliability and performance at an economical cost, the 7AM protector is ideal for fluorescent lighting ballasts, HID ballasts, recessed lighting fixtures, and other lighting products that require protection against overheating.

Electrical and Thermal Protection

Sensata Technologies’ 7AM is one of the lowest cost, most versatile protection devices on the market. This compact device combines temperature and current into a package designed to protect electric motors, transformers, recessed lighting, fluorescent ballasts, and battery packs. It is available in a wide variety of wire lead configurations, which can be customized for ease of installation.

The 7AM series of protectors offers rechargeable battery-pack protection with Klixon® dual–function over temperature as well as short circuit bimetal protectors that are self–resetting.

The 7AM series are typically used for protecting battery charger outputs and high-current battery packs (ie. Military, UPS). The 7AM can handle up to 16VDC and 20 amps under certain conditions and is available with a wide variety of open temperatures and short circuit sensitivities.

Motor Protection

The universal 7AM series motor protector is our most popular product, and though it is slightly larger than the 8MM it has a contact rating of up to 22 amps.

Protects against overheating in:

Shaded pole motors
Permanent split capacitor motors
Fluorescent lighting ballasts
HID ballasts
Recessed lighting fixtures
Battery packs
Vacuum cleaners
Washers and dryers
Automotive accessory motors
PC boards
...and more!
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