Enclosed automatic transfer switches

General & technical specification

Specific ratings according to IEC 60947-3 40A to 125A

Rated free air thermal current (Ith) and operational current in AC20 at 40°C ambient temperature

A

40

63

80

115

125

Rated enclosed thermal current (Ith) and operational current in AC20 at 40°C ambient temperature

A

40

63

80

115

125

Rated operational current AC 21A and AC 22A at voltages up to 500V

A

40

63

80

100

125

Rated operational current AC23A at voltages up to 415V

A

40

63

80

80

90

Rated AC 23 breaking capacity at 415V

A

320

504

640

640

720

Rated conditional short circuit current Ip (r.m.s.) at 415V, 50kA net

kA

16.5

16.5

16.5

16.5

16.5

and corresponding max. allowed cut-off current of gG

A

125

125

125

125

125

Rated short time withstand current Icw 690v (1sec), (r.m.s. value)

kA

2.5

2.5

2.5

2.5

2.5

Rated short time making capacity Icm, peak value 690v

kA

3.6

3.6

3.6

3.6

3.6

Mechanical endurance / switch

Oper

20000

20000

20000

20000

20000

Rated short-time withstand current Icw (r.m.s.) 690V, 0,1 sec

kA

5

5

5

5

5

Rated operational current, AC-31B, up to 415V

A

40

63

80

100

125

Rated operational current, AC-33B, up to 415V

A

40

63

80

80

80

The handle is a direct mounted type, and it shall be

padlockable in the “0” position with three padlocks with

5 …6 mm. It is possible to operate switch with the

manual handle in case of emergency, regardless of the

position of switch and without any supply power.

Technical specifications according to

IEC 60947-3 and IEC 60947-6-1

• Type of equipment

ATSE

• Class of equipment

PC

• Rated operational voltage,

Ue Max. 415 V

• Rated impulse withstand voltage, Uimp 6 kV

• Rated frequency

50 - 60 Hz

• EMC environment

A and B

Bypass Requirement

In order to comply with BS8519 which states “Where the availability

of the life safety and fire-fighting equipment is conditional to the

occupation of the building, a bypass arrangement should be

incorporated to enable the changeover device to be maintained

without loss of service from the critical plant”.

The bypass switches consist of the following;

Single or mains bypass

A closed transition manual changeover switch is included to allow for the

seamless (no 0 position giving no break in supply when moving to bypass)

transition to bypass. The front of the panel should indicate that the ATS has

been bypassed and is safe to carry out maintenance.

Dual Bypass

A closed transition manual changeover switch is included to allow for the

seamless (no 0 position giving no break in supply when moving to bypass)

transition to bypass. Together with a standard manual changeover switch to

allow you to choose between supply 1 or supply 2. The front of the panel should

indicate that the ATS has been bypassed and which supply is feeding the load

and is safe to carry out maintenance.

Specific ratings according to IEC 60947-3 160A to 1600A

Rated free air thermal current (Ith) and operational current in AC20 at 40°C ambient temperature

A

160

200

250

315

400

630

800

1000

1250

1600

Rated enclosed thermal current (Ith) and operational current in AC20 at 40°C ambient temperature

A

160

200

250

315

400

630

800

1000

120

1600

Rated operational current AC 21A and AC 22A at voltages up to 415V

A

160

200

250

315

400

630

800

1000

1250

1600

Rated operational current AC23A at voltages up to 415V

A

160

200

250

315

400

630

800

1000

1250

1250

Rated AC 23 breaking capacity at 415V

A

1280

1600

2000

2520

3200

5040

6400

10000

10000

10000

Rated conditional short circuit current Ip (r.m.s.) at 415V, 50kA net

kA

40.5

40.5

40.5

59

59

83.5

83.5

100

100

100

and corresponding max. allowed cut-off current of gG

A

355

355

355

500

500

800

800

1250

1250

1250

Rated short time withstand current Icw 690v (1sec), (r.m.s. value)

kA

8

8

8

15

15

20

20

50

50

50

Rated short time making capacity Icm, peak value 690v

kA

30

30

30

65

65

80

80

92

92

92

Mechanical endurance / switch

Oper

16000

16000

16000

16000

16000

10000

10000

6000

6000

6000

Rated short-time withstand current Icw (r.m.s.) 690V, 0,1 sec

kA

15

15

15

25

25

38

38

50

50

50

Rated operational current, AC-31B, up to 415V

A

160

200

250

315

400

650

720

1000

1250

1600

Rated operational current, AC-33B, up to 415V

A

160

200

250

315

400

650

650

1000

1000

1000