Aluminium Housed Power Resistors
Type CFH Series
Type CFH Series
Characteristics Electrical
The CFH is a high quality range of
aluminium housed power resistors
offering environmental protection to
IP55, 6kV dielectric strength, 1.8kW
power dissipation, and the ability to
absorb electrical pulses of up to
24kJ.
The use of advanced materials in the
construction of this device enables
operating temperatures of up to
450ºC giving very high power
density.
Dissipation @ 25°C with Heatsink (Watts):
Without Heatsink:
With Water Cooled Heatsink (40°C):
Overload Rating (5s):
Ohmic Value Min (Ohms):
Max:
Tolerance:
Maximum Working Voltage (DC/ACrms) Volts:
Insulation Resistance (Volts):
Dielectric Strength (AC peak) Volts:
Inductance (Henries):
Standard Heatsink area (mm2):
Thickness (mm):
Protection Grade (IP):
Mounting:
Cable Length:
Weight (g):
Heat Dissipation:
Key Features
I
2200W in a 72cm2
footprint
• Unparalleled power
density of 31W/cm2
I
Impressive Pulse
Capability
• Large active element
can absorb up to 24kJ
I
CFH500
CFH750
CFH1100
850
1300
1800
500
750
1100
1000
1500
2200
5600
8000
12000
0R5
0R5
0R5
18K
27K
27K
±5% Standard
1500
2500
3500
4000
>=10000 MΩ
4500 standard and 6000 special
5-50 µH at
7-70 µH at
10-100 µH at
20-200 µH at
1000 Hz
1000 Hz
1000 Hz
1000 Hz
1600
1600
1600
1600
135
135
135
135
IP55
Vertically
300mm
460
670
920
1250
Although the use of proprietary heat sinks with lower thermal
resistance is acceptable, up rating is not recommended. The use
of proprietary heat sink compound to improve
thermal conductivity is essential.
Dimensions
lf
30
A
ø6.2
No Heatsink Required
• Dissipates up to 950W
in free air
I
CFH350
650
350
750
4000
0R5
10K
Slimline Casing
• 30mm casing height for
design flexibility
I
82 ±2
71
95
Environmental Protection
to IP55
• Reliable in the harshest
conditions
B
Applications
I
I
I
I
I
I
I
I
Braking
Balancing
Capacitor Charging &
Discharging
Crowbar
Filter
Power Supplies
Electrical Machinery
Inrush Limiting
Literature No. 1773318
Issued: 02-06
Type
CFH350
CFH500
CFH750
CFH1100
A
110 mm
160 mm
220 mm
320 mm
B
60 mm
110 mm
140 mm
240 mm
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
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