Altech UR Series Tripping Curves

UR Series Trip Curves

10

-3

4x10

-3

10

-2

4x10

-2

10

-1

0.4

1

4

10

1

4

10

40

60

123 4 5 6810 20 40 100

Multiple of Rated Current

Seconds Minutes

Tripping time t

Thermal Overload

“Must Trip” < 1 hr = 145% RC
“Must Not Trip” > 1 hr = 113% RC

1.13-1.45xI

N

0.5A Through 10A Rated Current

123 4 5 6810 20 40 100

Multiple of Rated Current

Thermal Overload

“Must Trip” < 1 hr = 145% RC
“Must Not Trip” > 1 hr = 113% RC

10

-3

4x10

-3

10

-2

4x10

-2

10

-1

0.4

10

1

1

4

4

10

40

60

Seconds Minutes

Tripping time t

1.13-1.45xI

N

12A Through 63A Rated Current

10

-3

4x10

-3

10

-2

4x10

-2

10

-1

0.4

1

4

10

1

4

10

40

60

12345 6810 20 40 100

Multiple of Rated Current

Seconds Minutes

Tripping time t

Thermal Overload

“Must Trip” < 1 hr = 145% RC
“Must Not Trip” > 1 hr = 113% RC

1.13-1.45xI

N

0.5A Through 10A Rated Current

10

-3

4x10

-3

10

-2

4x10

-2

10

-1

0.4

1

4

10

1

4

10

40

60

12345 6810 20 40 100

Multiple of Rated Current

Seconds Minutes

Tripping time t

Thermal Overload

“Must Trip” < 1 hr = 145% RC
“Must Not Trip” > 1 hr = 113% RC

1.13-1.45xI

N

12A Through 63A Rated Current

1.13-1.45xI

N

1 23456810 20 40 100

Multiple of Rated Current

10

-3

4x10

-3

10

-2

4x10

-2

10

-1

0.4

1

4

10

1

4

10

40

60

Seconds Minutes

Tripping time t

16

Thermal Overload

“Must Trip” < 1 hr = 145% RC
“Must Not Trip” > 1 hr = 113% RC

0.3A Through 10A Rated Current

10

-3

4x10

-3

10

-2

4x10

-2

10

-1

0.4

1

4

10

1

4

10

40

60

12345 166 8 10 20 40 100

Multiple of Rated Current

Seconds Minutes

Tripping time t

Thermal Overload

“Must Trip” < 1 hr = 145% RC
“Must Not Trip” > 1 hr = 113% RC

1.13-1.45xI

N

12A Through 63A Rated Current

B Trip Curve C Trip Curve D Trip Curve

42

“B” Magnetic Trip Parameters

Rated current 0.5A to 63A.

1. Hold for a minimum of 100ms at
surge of 3 times rated current.

2. Trip in under 100ms at 5 times rated
current.

“C” Magnetic Trip Parameters

Rated current 0.5A to 63A.

1. Hold for a minimum of 100ms at
surge of 5 times rated current.

2. Trip in under 100ms at 10 times
rated current.

“D” Magnetic Trip Parameters

Rated current 0.5A to 63A.

1. Hold for a minimum of 100ms at
surge of 10 times rated current.

2. Trip in under 100ms at 16 times
rated current.

For the latest on Altech Circuit Breakers specifications please visit www.altechcorp.com/breaker.