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

SPECIFICATION

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

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%