Cut-outs can be fitted to certain
resistors which will operate a contact to disconnect the
resistor to prevent overload damage.
Resistance
The minimum and maximum values shown
below are those available within a range of standard
resistance alloys. You may select any Ohmic Value between
the Min and Max Values.
Enclosed Resistors
Resistors are available supplied
within a Heavy Duty Enclosure. See the
Enclosure Data Section
Power Ratings
Standard continuous ratings are from
250 Watts to 1000 Watts. For pulse ratings, refer to the
table below.
Ohmic Values & Ratings - Continuous, Short Time &
Intermittent
TYPE
CONT
SHORT TIME
(SECONDS)
INTERMITTENT
TIME (MINUTES)
OHMIC
VALUES
5
10
20
1/2
1
2
3
4
5
MIN
MAX
WATTS
WATTS
WATTS
WATTS
WATTS
WATTS
WATTS
WATTS
WATTS
WATTS
OHMS
OHMS
PT200H
250
5000
3750
2250
1375
825
625
500
375
310
0.6
25
PT300H
400
8000
6000
3600
2200
1320
1000
800
600
500
0.6
30
PT400H
525
10500
7875
4700
2900
1730
1310
1050
785
655
1.0
30
PT450H
600
12000
9000
5400
3300
1980
1500
1200
900
750
1.5
40
PT600H
800
16000
12000
7200
4400
2640
2000
1800
1200
1000
3.0
60
PT750H
1000
20000
15000
9000
5500
3300
2500
2000
1500
1250
3.5
100
Operating
Once Per Hour
Operating
Time in any 15 Minute Period
PT Heavy Duty Tape Wound Resistors - Dimensions (mm)
