Resistors
WIRE WOUND FUSIBLE RESISTORS
The WWF series wire wound fusible resistors are manufactured to perform as a regular resistor under normal conditions and as a fuse under excessive load. In WWF series, resistors up to 5W, the resistance value is colour coded with 3 bands plus a tolerance band. An additional white band indicates that the resistor is fusible. For resistors 6W and above, the value is printed on the resistor.
A wire wound fusible resistor is a wire that has been soldered around a metal cylinder. This device protects electrical circuits from damage by allowing them to open in the event of an overload or short circuit. It is commonly found in switch circuits and also operated in other places. A resistor is a device with an electrical resistance that resists the flow of an electric current. It is a two-terminal passive electrical component that resists current flow by obstructing electron flow with a physical barrier. We are the best Dealer and Distributor of Wire Wound Fusible Resistors in Mumbai, Maharashtra, India.
We offer Wire Wound Fusible Resistor to our clients at reasonable prices as listed below.
- 0.5 Wire Wound Fusible Resistor
- 1w Wire Wound Fusible Resistor
- 2w Wire Wound Fusible Resistor
- 82E Wire Wound Fusible Resistor
- 47E Wire Wound Fusible Resistor
- 33E Wire Wound Fusible Resistor
- 68E Wire Wound Fusible Resistor
- 100E Wire Wound Fusible Resistor
- 22E Wire Wound Fusible Resistor
- 150E Wire Wound Fusible Resistor
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SPECIFICATION |
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| Type | Wattage | DIMENSIONS IN MM |
Range in OHMS [Ω] | Tolerance | Dielectric withstanding Voltage | ||||
| D | L | H | d | ||||||
WWF 1 WWF 2 M |
1W / 2W | 3.20 ± 0.5 | 9 ± 0.5 | 26 ±2.0 | 0.55 ± 0.05 | 0.1 | 150 | 5% | 350 V |
WWF 2 WWF 3 M |
2W / 3W | 4.25 ± 0.5 | 11 ± 1.0 | 26 ± 2.0 | 0.65 ± 0.05 | 10 | 150 | 5% | 500 V |
WWF 3 WWF 4 M |
3W / 4W | 5 ± 0.5 | 15 ± 1.0 | 26 ±2.0 | 0.75 ± 0.05 | 10 | 150 | 5% | 500 V |
WWF 5 WWF 6 M |
5W / 6W | 6 ± 0.5 | 18 ± 1.0 | 30 ± 2.0 | 0.75 ± 0.05 | 10 | 150 | 5% | 500 V |
WWF 6 WWF 7 M WWF 8 MM |
6W / 7W / 8W | 8 ± 1.0 | 25 ± 1.0 | 38 ± 3.0 | 0.80 ± 0.05 | 10 | 150 | 5% | 500 V |
WWF 9 WWF 10 M |
9W / 10W | 8 ± 1.0 | 30 ± 1.0 | 38 ± 3.0 | 0.80 ± 0.05 | 10 | 150 | 5% | 1000 V |
‘M’ under ‘Type No.’ denotes miniature size
FUSING CHARACTERISTICS |
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| RESISTANCE RANGE | FUSING POWER | FUSING TIME | TCR | ||||||
1 Ω to 150 Ω |
Rated power x 32 | < 60 seconds | ±100ppm/°C | ||||||
| Tests | Condition | Spec |
|---|---|---|
| Resistance Temp. Coeff. | -55°C ~ 200°C | ±300ppm/°C |
| Short Time Overload | 5 times of rated wattag e for 5 sec for upto 3w 10 times of rated wattage for 5 sec. above 3w |
±2% |
| Rated Load | Rated voltage for 30 min. | ± 0.5% |
| Insulation Resistance | 500 V megger | 1,000MΩ |
| Load Life | 70°C on-off cycle 1,000hrs. | ±3% |
E 24 Series
| 10 | 11 | 12 | 13 | 15 | 16 | 18 | 20 | 22 | 24 | 27 | 30 |
| 33 | 36 | 39 | 43 | 47 | 51 | 56 | 62 | 68 | 75 | 82 | 91 |
| Colour | lst figure | 2nd figure | Multiplier | Tolerance |
|---|---|---|---|---|
| Black | 0 | 0 | 1 | |
| Brown | 1 | 1 | 10 | ± 1% |
| Red | 2 | 2 | 100 | ± 2% |
| Orange | 3 | 3 | 1,000 | |
| Yellow | 4 | 4 | 10,000 | |
| Green | 5 | 5 | 100,000 | ± 0.5% |
| Blue | 6 | 6 | 1,000,000 | ± 0.25% |
| Violet | 7 | 7 | 10,000,000 | ± 0.1% |
| Gray | 8 | 8 | ||
| White | 9 | 9 | ||
| Gold | 0.1 | ± 5% | ||
| Silver | 0.01 | ± 10% |