OUR Products
The company has established production bases in Shandong and Guangdong, where it conducts research and development and production of current and temperature protection devices.
★ Product Dimensions
Model | A | B | C | D | E | |||||
Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | |
LR120 | 19.0 | 23.0 | 4.6 | 5.5 | 0.4 | 1.0 | 5.0 | 7.5 | 3.8 | 4.2 |
LR200 | 20.9 | 23.1 | 4.6 | 5.5 | 0.4 | 1.0 | 3.5 | 6.0 | 3.8 | 4.2 |
LR260 | 20.9 | 23.1 | 4.6 | 5.5 | 0.4 | 1.0 | 3.5 | 6.0 | 3.8 | 4.2 |
LR300 | 24.0 | 27.5 | 6.9 | 7.5 | 0.4 | 1.0 | 4.0 | 7.5 | 4.8 | 5.2 |
LR350 | 24.0 | 27.5 | 6.9 | 7.5 | 0.4 | 1.0 | 4.0 | 7.5 | 4.8 | 5.2 |
LR380 | 24.0 | 27.5 | 6.9 | 7.5 | 0.4 | 1.0 | 4.0 | 7.5 | 4.8 | 5.2 |
LR420 | 24.0 | 27.5 | 9.8 | 10.5 | 0.4 | 1.0 | 4.0 | 7.5 | 4.8 | 5.2 |
LR450 | 24.0 | 27.5 | 9.8 | 10.5 | 0.4 | 1.0 | 4.0 | 7.5 | 4.8 | 5.2 |
LR550 | 24.0 | 27.5 | 9.8 | 10.5 | 0.4 | 1.0 | 4.0 | 7.5 | 4.8 | 5.2 |
LR600 | 27.1 | 29.1 | 13.9 | 14.5 | 0.4 | 1.0 | 4.1 | 5.5 | 5.9 | 6.6 |
LR730 | 27.1 | 29.1 | 13.9 | 14.5 | 0.4 | 1.0 | 4.1 | 5.5 | 5.9 | 6.6 |
LR900 | 45.4 | 47.6 | 7.9 | 8.5 | 0.4 | 1.0 | 4.6 | 6.2 | 5.9 | 6.1 |
LR1410 | 58.0 | 60.0 | 13.4 | 14.0 | 0.4 | 1.0 | 4.2 | 5.8 | 5.9 | 6.1 |
★ Electrical Characteristic
Model | Ihold | Itrip | Vmax | Imax | Pd | Itrip | Ttrip | Rmin | Rmax | R1max |
(A) | (A) | (V) | (A) | (W) | Current(A) | Time(S) | (Ω) | (Ω) | (Ω) | |
LR120 | 1.20 | 2.70 | 16 | 100 | 1.60 | 10.0 | 5.0 | 60 | 120 | 240 |
LR200 | 2.00 | 4.40 | 16 | 100 | 1.60 | 10.0 | 5.0 | 20 | 40 | 80 |
LR210 | 2.10 | 4.40 | 16 | 100 | 1.60 | 10.5 | 5.0 | 20 | 35 | 70 |
LR260 | 2.60 | 5.20 | 16 | 100 | 1.60 | 13.0 | 5.0 | 15 | 30 | 60 |
LR300 | 3.00 | 6.30 | 24 | 100 | 2.40 | 15.0 | 5.0 | 15 | 31 | 62 |
LR350 | 3.50 | 7.00 | 24 | 100 | 2.40 | 17.5 | 5.0 | 17 | 31 | 62 |
LR380 | 3.80 | 7.60 | 24 | 100 | 2.40 | 19.0 | 5.0 | 13 | 22 | 44 |
LR420 | 4.20 | 8.30 | 24 | 100 | 2.00 | 21.0 | 5.0 | 12 | 24 | 48 |
LR450 | 4.50 | 9.00 | 20 | 100 | 2.00 | 22.5 | 5.0 | 11 | 20 | 40 |
LR550 | 5.50 | 10.50 | 20 | 100 | 2.00 | 27.5 | 5.0 | 9 | 16 | 32 |
LR600 | 6.00 | 11.70 | 20 | 100 | 2.80 | 30.0 | 5.0 | 7 | 14 | 28 |
LR730 | 7.30 | 14.10 | 20 | 100 | 3.30 | 36.5 | 5.0 | 5 | 12 | 24 |
LR900 | 9.00 | 16.70 | 20 | 100 | 3.80 | 45.0 | 5.0 | 6 | 10 | 20 |
LR1410 | 14.10 | 26.20 | 20 | 100 | 6.00 | 70.5 | 5.0 | 3 | 5 | 10 |
★ Thermal Derating Chart-IH（ A）
Model | Maximum ambient operating temperatures（ ℃ ） | |||||||||
-40 | -20 | 0 | 20 | 40 | 50 | 60 | 70 | 80 | 85 | |
LR120 | 1.9 | 1.7 | 1.5 | 1.2 | 1. 0 | 0.9 | 0.8 | 0.6 | 0.5 | 0.4 |
LR200 | 3.1 | 2.8 | 2.5 | 2.0 | 1. 7 | 1.5 | 1.4 | 1.2 | 1.0 | 0.9 |
LR260 | 3.8 | 3.4 | 3.1 | 2.6 | 2.2 | 2.0 | 1.9 | 1.7 | 1.4 | 1.3 |
LR300 | 5.1 | 4.4 | 3.7 | 3.0 | 2.3 | 1.9 | 1.6 | 1.2 | 0.9 | 0.7 |
LR350 | 5.3 | 4.8 | 4.3 | 3.5 | 3.0 | 2.7 | 2.5 | 2.1 | 1.8 | 1.7 |
LR380 | 5.4 | 4.9 | 4.4 | 3.8 | 3.3 | 3.0 | 2.8 | 2.5 | 2.3 | 2.1 |
LR420 | 6.3 | 5.7 | 5.1 | 4.2 | 3.6 | 3.3 | 3.0 | 2.6 | 2.4 | 2.2 |
LR450 | 6.5 | 5.8 | 5.3 | 4.5 | 3.9 | 3.6 | 3.3 | 2.9 | 2.6 | 2.4 |
LR550 | 7.6 | 6.9 | 6.2 | 5..5 | 4.7 | 4.3 | 4.0 | 3.6 | 3.2 | 3.0 |
LR600 | 8.7 | 7.8 | 7.1 | 6.0 | 5.2 | 4.7 | 4.4 | 3.9 | 3.4 | 3.2 |
LR730 | 10.5 | 9.5 | 8.6 | 7.3 | 6.3 | 5.7 | 5.4 | 4.7 | 4.2 | 4.0 |
LR900 | 12.7 | 11.4 | 10 | 9.0 | 7.5 | 6.8 | 6.2 | 5.5 | 4.9 | 4.5 |
LR1410 | 19.9 | 17.8 | 15.7 | 14.1 | 11.8 | 10.8 | 9.7 | 8.7 | 7.7 | 7.2 |
★ Test Procedures And Requirements
Test | Test Conditions | Accept/Reject Criteria |
Resistance | In still air @ 25℃ | Rmin≤R≤Rmax |
Time to Trip | Specified current，Vmax，25℃ | Tmaximum Time to Trip |
Hold Current | 30min，at IH | No trip |
Trip Cycle Life | Vmax，Imax，1000cycles | No arcing or burning |
Trip Endurance | Vmax，24hours | No arcing or burning |
★ Physical Characteristics and Environmental Specifications
Physical Characteristics
Leadmaterial | 0.125mm nominal hickness,quarter-hardnickel |
Tape material | Polyester |
Environmental Specifications
Test | Conditions | ResistanceChange |
Passiveaging | 70℃,1000hours | ±10% |
Humidityaging | 85℃/85%RH.7days | ±5% |
Vibration | IL-STD-883C,TestConditionA | Nochage |
★ Electrical Specifications
Ihold=Hold current: maximum current device will not trip in 25℃ still air.
Itrip= Trip current: minimum current device will always trip in 25℃ still air.
Vmax=Maximum voltage device can withstand without damage at rated current(Imax).
Imax=Maximum fault current device can withstand without damage at rated voltage(vmax).
Pdmax= Power dissipated when device is in the tripped state in 25℃ still air environment at rated voltage.
Max Time-to-trip=Maximum time to trip(s) at assigned current.
Rmin=Minimum device resistance prior to tripping at 25℃.
Rmax=Maximum device resistance prior to tripping at 25℃.
R1max=Maximum device resistance one hour after it is tripped at 25℃
