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Housed Chassis Mounted Wire

We are one of the leading manufacturer of Aluminium Housed Chassis Mounted Wire Wound Resistors from India. Our high power wire wound resistors exhibit high performance life and are extensively used across industry. These are RoHS complaint and comply to international quality & safety standards.


Aluminium Housed Chassis Mounted Wire Wound Resistors
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CONSTRUCTION
Aluminium housed Resistors are wound with Nickel Copper or Nickel Chromium wire for obtaining required resistance on a ceramic core fitted with end caps. The winded assembly is then encapsulated in a anodised Heat sink using high temperature moulding compound.


Features
  • Low Cost, Light weight & Compact.
  • Non-inductive Type available.
  • Custom Values available.


APPLICATIONS
These Wire Wound Resistors are applied where high wattage dissipation is required in a small space. The metal heat sink ensures good heat dispersal & allows a low hot-spot temperature. Major appliactions include Induction furnace, Medical equipments, Humidity Chambers etc.


SPECIFICATIONS
Power Rating 5 Watts to 250 Watts
Terminations Lugs for 5 - 50W , Screws for 100 - 250W
Temp Coeff ± 50 PPM to 200 PPM
Tolerance ± 10%, Closer tolerances available.
Dielectric Voltage 1000 VAC for 5W & 10W, 1500 VAC for 25 W & 200W 2000 VAC for 250 W
Operating Temp -55°C to 250°C
Deratings Deratings required for reduced chassis mounted area and for high ambient temperatures. Derate to zero Power Linearly at 250°C ambient. Derating necessary for unmounted resistors at ambient temperatures of 25°C, 5W & 10W - 40%, 25W-50% 50W & above 60%.


Aluminium Housed Chassis Mounted Wire Wound Resistors


DIMENSIONS & RANGE
D i m e n s i o n s i n M . M . Dimensions M.M.
for Aluminium
Heatsink
Resistance
Range
Watts A
±1.0
B
± 0.25
C
Max 4.0
D
± 0.25
E
± 1.60
F
± 1.00
G
± 1.00
H
± 0.80
l
± 0.25
J
± 0.80
K
± 0.13
L
Max
M
± 1.60
N
± 0.50
P
± Min
Q
± 0.13
R S T
5 28.6 12.5 2.00 11.3 15.3 6.80 8.50 12.5 - 16.4 2.40 8.20 3.40 1.70 1.60 1.30 100 100 2.0 0.1W-500
10 34.9 15.9 2.40 14.3 19.1 7.90 10.7 15.9 - 20.4 2.40 9.90 4.20 1.90 2.00 2.00 100 100 2.0 0.1W-1K
25 50.0 20.0 4.40 18.3 27.0 11.2 14.0 20.0 - 27.5 3.18 14.0 5.90 1.90 2.00 2.00 150 150 1.5 0.1W-5K
50 71.0 21.4 5.00 39.8 50.0 11.2 16.0 21.4 - 29.0 3.18 15.5 7.90 2.25 2.00 2.00 150 150 3.0 0.1W-10K
100 95.0 37.0 15.0 35.0 65.0 15.0 26.0 37.0 - 47.0 5.00 26.0 11.0 3.50 4.00 - 150 200 3.0 0.1W-20K
150/200 139 57.0 9.50 70.0 89.0 25.0 46.0 57.0 - 73.0 5.00 45.0 20.0 5.00 5.00 - 150 300 3.0 0.1W-35K
250/300 178 63.5 8.00 98.4 115 32.0 54.0 63.5 76.0 76.0 5.00 56.0 25.0 5.00 6.00 - 300 300 3.0 0.1W-50K

R = Length, S = Width, T = Thickness
value & wattages lower & higher than specified available.
Non - inductive type available.



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