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No. | Part Name | Material or Function | Remarks |
1 | Coating 1 | Silicon Paint | |
2 | Coating 2 | Silicon Paint | |
3 | Resistor | Fusible Resistor | 2.2Ω |
4 | Cap | Iron | |
5 | Insulator | Epoxy | |
6 | Ceramic Tube | Ceramic | |
7 | Fuse | Thermal fuse | 230℃ |
8 | Lead Wire | Cu-Sn and Cu-Fe-Sn | 0.6mm+0.5mm |
Catalogue No. | Indication A | Indication B | Remarks |
Power/Resistor/Thermal Fuse | Trademark/Type | Approval No. | |
4RT Series 1A | 2W/2.2R/230T | ![]() |
VDE:Pending CQC:Pending UL:Pending KC: Pending |
No. | Characteristics | Test Condition | Specification | Test Method |
1 | Resistance | Test Voltage DC 2.6V Test Current DC 1A~10uA |
|
HM2541A Resistance |
2 | Breaking current Test | Over current test>2.5A | Insulation Resistance>0.1MΩ | CX2676F Puncture Tester |
3 | Surge test | Combination Wave Test: -1.2/50us,8/20us -Model:Async -Polarity:Alt -Interval:10s -Test Time:5 Times -Out put: Full Load |
2KV Pass | LSG-5060A Surge Tester(IEC61000-4-5) |
Ring Wave: -Open Circuit Voltage:0.5us/100KHz,6.5KV MAX. -Short Circuit Current:500A,Ring Wave -Surge Polarity:(0°、90°、270°)+/-5Times |
6KV Pass | (IEC61000-4-12) | ||
4 | Short test | the voltage of 220V | During the test, with no fire, explosion on component and Set test | AC Power Supply |
5 | Fusing Characters |
Test Current 2A | <60s | DC Power Supply |
6 | I2t | Test time 8ms | 0.125A2s | DC Power Supply |
Item | Test Requirement | Test Condtiton |
High & low Temperature Test | After test, the resistance value of the fuses shall be in range | Test high temperature:85℃,Test time:48h Test low temperature:-20℃,Test time:48h |
High Humidity Test | After test, the resistance value of the fuses shall be in range | Test temperature:85℃,Test humidity:95%, Test time:96h |
Falling Shock Test | Cap should be firmly attached so that it is not possible to remove them without damaging the fuse itself.The means of attachment shall be sufficient to withstand an axial pull of 5N applied to each cap for 1 minute.The cap shall be nickel plated firmly.The glass tube shall have no defects such as crack and injury.After falling shock test,the resistance value of the fuses shall be in range. | Falling Height:152cm Falling Times:5 |
Vibration | After test, the resistance value of the fuses shall be in range | Amplitude:1.5mm, Frequency:10~55~10Hz,Test time:2h |