Motor Protector / Thermal Cut-Out
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- Over 3 billion sold
- Compact, miniature size
- UL, C-UL, DEKRA (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
Professional and fast quote
Product usually available on stock
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Description
The Klixon® 7AM Thermal Protector is the market leader, backed by proven innovations in protection technology. The 7AM is a thermally operated snap-action device which delivers the maximum protection in the smallest package at an affordable price. The 7AM is a proven performer in protection technology with over 35 years of design experience combined with a modern state-of-art manufacturing facility.
Operation
The operating principle of the 7AM is both simple and effective. At the heart of the protector is a Klixon® bimetal snap-action disc. When the temperature of this disc reaches its precalibrated 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, in increase in current flowing thru the disc, or a combination of both. After the 7AM breaks the circuit, the system cools and the 7AM automatically resets allowing power to be restored in the circuit.
Quality Each 7AM rating has a bimetal disc designed and manufactured for the 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 thru Sensata Technologies traditional emphasis on quality.
A corporate- wide thrust, re-emphasizes the supplier’s responsibility and integrates modern statistical techniques into the production and quality assurance processes.
As continuous inputs to the quality monitoring systems, more than 12 different checks are made during the manufacturing process.
Specifications
| Rated Voltage | 125 Vac / 250 Vac |
| Dimensions | 20.2 x 10.8 x 4.9 mm (including terminals) |
| Life | 10,000 cycles / 8 A / 250 Vac (see approvals sheets) |
| Maximum Contact Ratings @ 10K cycles |
16 VDC at 20 amps 120 VAC at 22 amps 277 VAC at 8 amps |
| Open Temperature | 70°C to 175°C in increments of 5°C |
| Temperature Tolerance | ±5°C |
| Differential Temperature | 19°C to 54°C, depending on open temperature |
| Seal | High-seal and low-seal gasket material available |
| Maximum Ambient Temperature | Continuous: open-temperature +10°C Overshoot: 5 minutes at 200°C |
| Vibration | Military standard 202F, Method 204D, Test Condition D (20g peak) |
| Corrosion Resistance | 48 hours at 35°C in 5% salt environment (ASTM B117) |
| Humidity | 95% relative humidity, 40°C: 2 days |
| Thermal Shock | -20°C / +150°C, each for 30 minutes / 5 cycles |
- Applications
- BrandsSensata Technologies®