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[China]
Trade Verify
Address: Building C, Xinmeijia Science and Technology Park, Chashan
Contact name:Andy Wu
Dongguan Tianrui Electronics Co., Ltd |
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Verified Suppliers
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Motor Automatic Auto Reset L1 Circuit Breaker 3A 5A 6A 10A 16A 20A 25A 30A 35A 40A 50A 60A 125V 250V AC
L1 Series "SERIES TRIP", "PUSH TO RESET" Single Pole circuit breakers represent our largest selling product family. Bases on a proven "SNAP ACTING" bimetallic thermal seneing elemant system. L 1 Series circuit breakers sease Overload conditions and interupt the flow of Current. The resettable actuator mechenism then remains disengaged until manually reset.
L1 Series offers amperage ratings from 3A to 60A, and is suitable for a diversity of applications, our products are carefully calibrated and tested to ensure reliable performance under a variety of operating assignments and conditions.
| Rated Voltage | AC 125/250V DC 50V |
| Rated Current | 3~60A |
| Interrupt Capacity | 125VacX1 000A 250VacX200A |
| Insulation Resistance | >500 MΩ |
| Resettable Overload Capacity | Ten Times Rated Current |
| Dielectric Strength | 1 ,500Vac 1 minute |
| Weight | Approx 25.0g (0.9 oz.) |
| Voltage Drop | Less than 0.25V |
| Reset 1 rime | Within 60 seconds |
| Method of Operation | R Type and J TYPE |
Mechanical / Environmental Data
Operating Temperture Range: -10°C to 60°C
Termination: 250" (6.35mm) quick conects or solder terminals
Mounting: Various options. See Ordering lnfomation and drawings
Temperature Rise at Terminal Block: Less than 65°C at 100% of rated
current applied continuously at 25°C
Contact Endurance: 125Vac X 150% of rated current >500 Cycles
Typical Resistance VS. Current Rating @ +25°C | |||
Current Rating in Amps | TvpicalResistance in Ohms | Current Rating in Amps | Typical Resistance in Ohms |
| 5.0 | 0.052 | 15.0 | 0.017 |
| 6.0 | 0.042 | 20.0 | 0.012 |
| 7.0 | 0.036 | 25.0 | 0.010 |
| 8.0 | 0.031 | 30.0 | 0.008 |
| 10.0 | 0.025 | 35.0 | 0.007 |
| 12.0 | 0.021 | 40.0 | 0.006 |
Capacity Correction Factors For Ambient Temperatures | ||||||||||
Temperature | ||||||||||
| Current Rating Amps | °F | +14 | +32 | +50 | +68 | +77 | +86 | +104 | +122 | +140 |
| °C | -10 | +0 | +10 | +20 | +25 | +30 | +40 | +50 | +60 | |
3 to 8A | .70 | .80 | .92 | .98 | 1.00 | 1.10 | 1.25 | 1.61 | 2.00 | |
9 to 40A | .74 | .78 | .83 | .90 | 1.00 | 1.05 | 1.15 | 1.31 | 1.55 | |
The unit is calibrated for ambient temperature of +25°C. To determine the rated current for a lower or higher ambient Temperature, use a correction factor as above.
| 100% of rated current | Hold, No-Trip |
| 135% of rated current |
Trip in 1 Hour |
| 200% of rated current | Within 40 Seconds |
| 300% of rated current | Within 10 Seconds |
| Approval | File No. | Rated Current Range | Rated Voltage | Standard |
| UL+cUL | E478741 | 3~50A | 125/250VAC | UL1077 |
| TUV | 50046704 | 3~50A | 125/250VAC | EN60934 |
| CCC | 2014010307693248 | 3~50A | 125/250VAC | GB17701 |
| UL :+cUL | E482018 | 3~50A | 125/250VAC | UL244A |
Working Principle of L1 Circuit Breaker
An overload protector (circuit breaker) protects the compressor by sensing temperature and current. It is composed of a set of normally closed contacts and bimetallic elements. The overcurrent overload protector is mounted on the outside of the compressor, in direct contact with the compressor casing and in series with the compressor windings. If the compressor cannot be started for some reason, the overloaded locked-rotor current will cause the bimetal element to heat up and bend rapidly, causing the contact to quickly trip, cutting off the current flowing through the compressor, thereby protecting the compressor. Similarly, if the motor of the compressor is abnormally heated and the temperature of the windings of the compressor is too high, the protector will heat up and trip, thereby protecting the compressor. As long as the cause of the failure is not ruled out, the compressor will start and stop with the action of the bimetallic element over and over again in the case of overcurrent and overload.
Application Range of Overcurrent Overload Protector
Products are widely used in small household appliances, generators, air compressors, automobiles, electric vehicles, power tools, extension cords, transformers, large complete sets of equipment, plugs and sockets, etc.
Overload Overload Protector Inspection Method
Check with an ohmmeter
1. If the overcurrent overload protector is open, wait until it
cools down to room temperature (closed) to continue the
measurement.
2. Although it is possible to continuously observe the operation of
the overload protector, it is difficult to confirm whether the part
is working according to the specifications.
3. If you cannot confirm whether there is any problem with the
overcurrent and overload protector, please replace the parts with
the same specifications and parameters.
Warning: The overcurrent and overload protector cannot be bypassed,
even for temporary measurement, it must be replaced with a
substitute that meets the regulations, and the overcurrent and
overload protector cannot be cancelled casually.
Optional Models
Contact Details:
Andy Wu
Email: andy@tianrui-fuse.com.cn
MP/Whatsapp: +86 13532772961
Wechat: HFeng0805
Skype: andywutechrich
QQ: 969828363
