Powerohm Products

Type ER Electrical Ratings & Coils Dimensions

SPECIFY PART NUMBERS AS FOLLOWS: ER or ERB __ - __ . Length

For example, thepart number of aTypeER, 50 amp, 0.51 ohm coil is ER5-50.

AmpRating RATINGS: The continuous current ratings are based on a 375°C temperature rise. The resistance values aremeasured at 25°C and have a + 10% tolerance.

ELECTRICALRATINGSOF STANDARDSIZECOILS

LENGTH 2 LENGTH 3 LENGTH 4 LENGTH 5 LENGTH 6 LENGTH 7 RESISTANCE IN OHMS

CONTINUOUS AMP RATING

3.00

4.10

5.10

6.20

7.20

1.90

15

2.60

3.50

4.40

5.30

6.20

1.70

16

2.0

2.7

3.5

4.2

4.90

1.30

18

1.80

2.4

3.1

3.7

4.3

1.20

20

1.37

1.85

2.3

2.8

3.3

.89

23

1.06

1.44

1.81

2.2

2.6

.69

26

.75

1.02

1.29

1.55

1.82

.49

29

.66

.90

1.13

1.37

1.60

.43

32

.54

.73

.92

1.11

1.30

.35

36

.41

.56

.70

.85

.99

.27

40

.38

.52

.65

.78

.92

.25

45

.30

.40

.51

.62

.72

.19

50

.23

.32

.40

.48

.57

.15

60

.19

.26

.33

.39

.46

.12

70

.11

.15

.19

.23

.27

.07

85

.10

.13

.16

.20

.23

.06

100

TYPE ER DIMENSIONS: The coil dimensions are for standard size units. Coil and threaded rod length can be varied per customer request. All units have the same approximate diam eter of 2 inches. Units are furnished with 5/16"-18 through rods and terminal hardware.

STANDARDCOILDIMENSIONS

LENGTH

A

B

C

7

6-1/8

2

9-3/8

10

9-1/8

3

12-3/8

FRONTVIEW

SIDEVIEW

13

12-1/8

4

15-3/8

3/8 DIA.

16

15-1/8

5

18-3/8

3

19

18-1/8

6

21-3/8

C A B

22

21-1/8

7

24-3/8