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Page 1

Siemens LV 1 · 2009

10
10/2 Introduction

Single-Phase Transformers
4AM, 4AT Safety, Isolating,
Control and Mains Transformers

10/5 General data
10/6 4AM safety (mains transformers)

and control transformers
10/20 4AM safety transformers

(mains transformers)
10/24 4AM, 4AT isolating, control

and mains transformers
10/42 4AM isolating and mains transformers
10/47 4AM, 4AT transformers

with selectable voltages
4BT Power Transformers

10/49 General data
10/50 4BT transformers

with selectable voltages
4AX22, 4AX23 Safety Transformers

10/51 Resin-enclosed
4AX24 Isolating Transformers

10/53 Resin-enclosed
4AT Isolating Transformers

10/54 For supply of medical premises
4FL, 4FK Voltage Regulators

10/55 4FL voltage regulators, transformer type
10/56 4FK voltage regulators, magnetic type

Three-Phase Transformers
4AP, 4AU Safety, Isolating, Control
and Mains Transformers

10/57 General data
10/58 4AP, 4AU isolating, control and mains

transformers
10/60 4AP isolating and mains transformers
10/61 4AP, 4AU transformers

with selectable voltages
4BU Power Transformers

10/63 General data
10/64 4BU matching transformers
10/74 4BU matching transformers

with CUUS approval
10/84 4BU transformers

with selectable voltages
4AP, 4AU Autotransformers

10/86 For matching purposes according to
EN 61558-2-13
4FL Voltage Regulators

10/88 4FL voltage regulators,
transformer type

Transformers

LV1_09_Gesamt_EN.book Seite 1 Mittwoch, 11. Februar 2009 3:54 15

© Siemens AG 2009

Page 2

Transformers

Introduction

10/2 Siemens LV 1 · 2009

10

■ Overview
Single-phase transformers

1)
CUUS max. 600 V.

2) For more information see the interactive Catalog CA 01 and Mall.

Version Rated power Rated input voltage Rated output voltage Protec-
tion
class

Page

kVA V AC V AC

4AM, 4AT safety, isolating, control and mains transformers
4AM safety (mains transformers) and control transformers

With one input voltage 0.063 ... 1.0 230 ± 5 %; 400 ± 5 %;
440 ± 5 %; 500 ± 5 %

24; 42 I 10/6

For European voltages 0.063 ... 1.0 400/230 ± 15 V 24; 42 I 10/14

In multi-voltage version 0.063 ... 1.0 550 ... 208; 600 ... 230 24; 42 I 10/16

4AM safety transformers (mains transformers)

With one input voltage 0.025 ... 0.04 230 ± 5 %; 400 ± 5 %;
440 ± 5 %; 500 ± 5 %

24; 42 I 10/20

4AM, 4AT isolating, control and mains transformers

4AM and 4AT with one input voltage 4AM: 0.063 ... 2.5;
4AT: 4 ... 10

230 ± 5 %; 400 ± 5 %;
440 ± 5 %; 500 ± 5 %

110; 2 × 115; 230 I 10/24

4AM and 4AT with one input voltage,
Without CUUS

4AM: 0.063 ... 2.5;
4AT: 4 ... 10

660 ± 5 %; 690 ± 5 % 230 I 10/37

4AM for European voltages 0.063 ... 2.5 400/230 ± 15 V 2 × 115 I 10/39

4AM and 4AT in multi-voltage version 4AM: 0.063 ... 2.5;
4AT: 4 ... 10

550 ... 208; 600 ... 230 2 × 115 I 10/40

4AM isolating and mains transformers

4AM with one input voltage 0.025 ... 0.04 230 ± 5 %; 400 ± 5 %;
440 ± 5 %; 500 ± 5 %

110; 230 I 10/42

4AM and 4AT with one input voltage,
Without CUUS

0.025 ... 0.04 660 ± 5 %; 690 ± 5 % 230 I 10/46

4AM, 4AT transformers with selectable voltages

4AM and 4AT safety, isolating, control and
mains transformers and autotransformers

4AM: 0.025 ... 2.5;
4AT: 4 ... 16

Selectable; Selectable;
4AM: 12 … 6901); 4AM: 12 … 6901); I 10/47
4AT: 24 … 6901) 4AT: 24 … 6901) I

4BT power transformers
4BT transformers with selectable voltages 18 ... 250 Selectable; 100 … 10001) Selectable; 100 … 10001) I 10/50

4AX22, 4AX23 safety transformers
Resin-enclosed 0.1 ... 1 230 24; 42 II 10/51

4AX24 isolating transformers
Resin-enclosed 0.16 ... 2.5 230 230 II 10/53

4AT isolating transformers
For supply of medical premises 2.5 ... 8 230 230-115 I 10/54

4FL, 4FK voltage regulators
4FL transformer type 2.2 ... 63 230 230 I 10/55

4FK magnetic type 0.12 ... 0.75 230/selectable 110 ... 500 230/selectable 110 ... 500 I 10/56
1 ... 2.5 230/selectable 110 ... 500 230/selectable 110 ... 500 I 10/56
3.15 ... 10 400/selectable 110 ... 500 230/selectable 110 ... 500 I 10/56

4CH, 4CP variable-ratio transformers
4CH toroidal-core variable-ratio
transformers

0.28 ... 3.22
0.69 ... 3.22

400
230

0 ... 230 stepless
0 ... 230 stepless

I
I

2)
2)

4CP pillar-type variable-ratio transformers 13.8 ... 207 400 0 ... 400 stepless I 2)

4AM 4AT 4BT 4FK 4CH4AT for the
supply of medical
premises

4AX24

LV1_09_Gesamt_EN.book Seite 2 Mittwoch, 11. Februar 2009 3:54 15

© Siemens AG 2009

Page 44

Single-Phase Transformers
4AM, 4AT Safety, Isolating, Control and Mains Transformers

4AM isolating and mains transformers

10/44 Siemens LV 1 · 2009

10

With one input voltage

Rated input voltage U1N 440 V –5 %,
rated output voltage U2N 110 V

CUUS, ̧ , μ

PU (UNIT, SET, M) = 1
PS = 1 unit (You can order this

quantity or a multiple thereof.)
PG = 104

1) The delivery time class depends on the quantity, see page 10/4 "Options".

With one input voltage

Rated input voltage U1N 440 V ±5 %,
rated output voltage U2N 230 V

CUUS, ̧ , μ

PU (UNIT, SET, M) = 1
PS = 1 unit (You can order this

quantity or a multiple thereof.)
PG = 104

1) The delivery time class depends on the quantity, see page 10/4 "Options".

Rated power
Pn

Short-time
rating
Pshortt.

DT1) Screw terminals/
flat connectors

Cu
weight
per PU
approx.

Total
weight
per PU
approx.

DT1) Cage Clamp terminals Cu
weight
per PU
approx.

Total
weight
per PU
approx.Order No. Price

per PU
Order No. Price

per PU
kVA kVA kg kg kg kg

Degree of protection IP00, standard version
0.025 -- B 4AM23 42-5CJ10-0FA0 0.110 0.600 B 4AM23 42-5CJ10-0FA1 0.110 0.600
0.04 -- B 4AM26 42-5CJ10-0FA0 0.150 0.800 B 4AM26 42-5CJ10-0FA1 0.150 0.800

Degree of protection IP00, standard rail mounting
0.025 -- B 4AM23 42-5CJ10-0FB0 0.110 0.600 B 4AM23 42-5CJ10-0FB1 0.110 0.600
0.04 -- B 4AM26 42-5CJ10-0FB0 0.150 0.800 B 4AM26 42-5CJ10-0FB1 0.150 0.800

Degree of protection IP23
0.023 -- B 4AM23 42-5CJ10-0FC0 0.110 1.900 B 4AM23 42-5CJ10-0FC1 0.110 1.900
0.036 -- B 4AM26 42-5CJ10-0FC0 0.150 2.100 B 4AM26 42-5CJ10-0FC1 0.150 2.100

Degree of protection IP54
0.02 -- B 4AM23 42-5CJ10-0FD0 0.110 1.900 B 4AM23 42-5CJ10-0FD1 0.110 1.900
0.03 -- B 4AM26 42-5CJ10-0FD0 0.150 2.100 B 4AM26 42-5CJ10-0FD1 0.150 2.100

Rated power
Pn

Short-time
rating
Pshortt.

DT1) Screw terminals/
flat connectors

Cu
weight
per PU
approx.

Total
weight
per PU
approx.

DT1) Cage Clamp terminals Cu
weight
per PU
approx.

Total
weight
per PU
approx.Order No. Price

per PU
Order No. Price

per PU
kVA kVA kg kg kg kg

Degree of protection IP00, standard version
0.025 -- B 4AM23 42-5CT10-0FA0 0.110 0.600 C 4AM23 42-5CT10-0FA1 0.110 0.600
0.04 -- C 4AM26 42-5CT10-0FA0 0.150 0.800 C 4AM26 42-5CT10-0FA1 0.150 0.800

Degree of protection IP00, standard rail mounting
0.025 -- C 4AM23 42-5CT10-0FB0 0.110 0.600 C 4AM23 42-5CT10-0FB1 0.110 0.600
0.04 -- B 4AM26 42-5CT10-0FB0 0.150 0.800 C 4AM26 42-5CT10-0FB1 0.150 0.800

Degree of protection IP23
0.023 -- B 4AM23 42-5CT10-0FC0 0.110 1.900 C 4AM23 42-5CT10-0FC1 0.110 1.900
0.036 -- B 4AM26 42-5CT10-0FC0 0.150 2.100 C 4AM26 42-5CT10-0FC1 0.150 2.100

Degree of protection IP54
0.02 -- C 4AM23 42-5CT10-0FD0 0.110 1.900 C 4AM23 42-5CT10-0FD1 0.110 1.900
0.03 -- C 4AM26 42-5CT10-0FD0 0.150 2.100 C 4AM26 42-5CT10-0FD1 0.150 2.100

LV1_09_Gesamt_EN.book Seite 44 Mittwoch, 11. Februar 2009 3:54 15

© Siemens AG 2009

Page 45

Single-Phase Transformers
4AM, 4AT Safety, Isolating, Control and Mains Transformers

4AM isolating and mains transformers

10/45Siemens LV 1 · 2009

1010

With one input voltage

Rated input voltage U1N 500 V –5 %,
rated output voltage U2N 110 V

CUUS, ̧ , μ

PU (UNIT, SET, M) = 1
PS = 1 unit (You can order this

quantity or a multiple thereof.)
PG = 104

1) The delivery time class depends on the quantity, see page 10/4 "Options".

With one input voltage

Rated input voltage U1N 500 V ±5 %,
rated output voltage U2N 230 V

CUUS, ̧ , μ

PU (UNIT, SET, M) = 1
PS = 1 unit (You can order this

quantity or a multiple thereof.)
PG = 104

1) The delivery time class depends on the quantity, see page 10/4 "Options".

Rated power
Pn

Short-time
rating
Pshortt.

DT1) Screw terminals/
flat connectors

Cu
weight
per PU
approx.

Total
weight
per PU
approx.

DT1) Cage Clamp terminals Cu
weight
per PU
approx.

Total
weight
per PU
approx.Order No. Price

per PU
Order No. Price

per PU
kVA kVA kg kg kg kg

Degree of protection IP00, standard version
0.025 -- B 4AM23 42-5FJ10-0FA0 0.110 0.600 B 4AM23 42-5FJ10-0FA1 0.110 0.600
0.04 -- B 4AM26 42-5FJ10-0FA0 0.150 0.800 B 4AM26 42-5FJ10-0FA1 0.150 0.800

Degree of protection IP00, standard rail mounting
0.025 -- B 4AM23 42-5FJ10-0FB0 0.110 0.600 B 4AM23 42-5FJ10-0FB1 0.110 0.600
0.04 -- B 4AM26 42-5FJ10-0FB0 0.150 0.800 B 4AM26 42-5FJ10-0FB1 0.150 0.800

Degree of protection IP23
0.023 -- B 4AM23 42-5FJ10-0FC0 0.110 1.900 B 4AM23 42-5FJ10-0FC1 0.110 1.900
0.036 -- B 4AM26 42-5FJ10-0FC0 0.150 2.100 B 4AM26 42-5FJ10-0FC1 0.150 2.100

Degree of protection IP54
0.02 -- B 4AM23 42-5FJ10-0FD0 0.110 1.900 B 4AM23 42-5FJ10-0FD1 0.110 1.900
0.03 -- B 4AM26 42-5FJ10-0FD0 0.150 2.100 B 4AM26 42-5FJ10-0FD1 0.150 2.100

Rated power
Pn

Short-time
rating
Pshortt.

DT1) Screw terminals/
flat connectors

Cu
weight
per PU
approx.

Total
weight
per PU
approx.

DT1) Cage Clamp terminals Cu
weight
per PU
approx.

Total
weight
per PU
approx.Order No. Price

per PU
Order No. Price

per PU
kVA kVA kg kg kg kg

Degree of protection IP00, standard version
0.025 -- C 4AM23 42-5FT10-0FA0 0.110 0.600 C 4AM23 42-5FT10-0FA1 0.110 0.600
0.04 -- B 4AM26 42-5FT10-0FA0 0.150 0.800 C 4AM26 42-5FT10-0FA1 0.150 0.800

Degree of protection IP00, standard rail mounting
0.025 -- C 4AM23 42-5FT10-0FB0 0.110 0.600 C 4AM23 42-5FT10-0FB1 0.110 0.600
0.04 -- B 4AM26 42-5FT10-0FB0 0.160 0.800 C 4AM26 42-5FT10-0FB1 0.150 0.800

Degree of protection IP23
0.023 -- C 4AM23 42-5FT10-0FC0 0.110 1.900 C 4AM23 42-5FT10-0FC1 0.110 1.900
0.036 -- C 4AM26 42-5FT10-0FC0 0.150 2.100 B 4AM26 42-5FT10-0FC1 0.150 2.100

Degree of protection IP54
0.02 -- C 4AM23 42-5FT10-0FD0 0.110 1.900 C 4AM23 42-5FT10-0FD1 0.110 1.900
0.03 -- C 4AM26 42-5FT10-0FD0 0.150 2.100 C 4AM26 42-5FT10-0FD1 0.150 2.100

LV1_09_Gesamt_EN.book Seite 45 Mittwoch, 11. Februar 2009 3:54 15

© Siemens AG 2009

Page 87

Three-Phase Transformers
4AP, 4AU Autotransformers
For matching purposes according

to EN 61558-2-13

10/87Siemens LV 1 · 2009

1010

Rated input voltage U1N 3 AC 480-460-440-415-400 (380)
1) V, 50 ... 60 Hz,

rated output voltage U2N 3 AC 230 (220)
1) V

CUUS, É
1

1) Operating with 3 AC 380 V at the input terminals results in an output volt-
age of 3 AC 220 V.

2) The delivery time class depends on the quantity, see page 10/4 "Options".

Rated
power Pn

Power loss
approx.

DT2) Order No. Price
per PU

PU
(UNIT,
SET, M)

PS* PG Cu
weight
per PU
approx.

Total
weight
per PU
approx.

kVA W kg kg

Degree of protection IP00
5 140 B 4AP27 42-8JT10-2XA0 1 1 unit 104 5.000 25.000
9.1 210 B 4AP30 52-8JT10-2XA0 1 1 unit 104 14.000 41.000

12.5 275 B 4AU30 32-8JT10-2XA0 1 1 unit 104 12.300 42.000

16 380 B 4AU36 12-8JT10-2XA0 1 1 unit 104 11.000 53.000
22.5 390 B 4AU36 42-8JT10-2XA0 1 1 unit 104 23.000 65.000
31.5 480 B 4AU39 32-8JT10-2XA0 1 1 unit 104 34.000 85.000

Degree of protection IP23
4.5 125 B 4AP27 42-8JT10-2XC0 1 1 unit 104 5.000 32.700
7.3 140 B 4AP30 52-8JT10-2XC0 1 1 unit 104 14.000 48.700

10 190 B 4AU30 32-8JT10-2XC0 1 1 unit 104 12.300 49.700

12.8 265 B 4AU36 12-8JT10-2XC0 1 1 unit 104 11.000 66.900
18 270 B 4AU36 42-8JT10-2XC0 1 1 unit 104 23.000 78.900
25.2 330 B 4AU39 32-8JT10-2XC0 1 1 unit 104 34.000 98.900

Degree of protection IP54
4 110 B 4AP27 42-8JT10-2XD0 1 1 unit 104 5.000 32.700

6.4 120 B 4AP30 52-8JT10-2XD0 1 1 unit 104 14.000 48.700

8.8 160 C 4AU30 32-8JT10-2XD0 1 1 unit 104 12.300 49.700

11.2 220 B 4AU36 12-8JT10-2XD0 1 1 unit 104 11.000 66.900
15.8 225 B 4AU36 42-8JT10-2XD0 1 1 unit 104 23.000 78.900
22.1 280 B 4AU39 32-8JT10-2XD0 1 1 unit 104 34.000 98.900

* You can order this quantity or a multiple thereof.

LV1_09_Gesamt_EN.book Seite 87 Mittwoch, 11. Februar 2009 3:54 15

© Siemens AG 2009

Page 88

Three-Phase Transformers
4FL Voltage Regulators

4FL voltage regulators, transformer type

10/88 Siemens LV 1 · 2009

10

■ Overview

4FL

• According to DIN VDE 0552
• Degree of protection IP21
• ta = 40 °C/E

■ Application
The 4FL transformer-type voltage regulators are used as voltage
stabilizers on supply systems with varying voltages. On the out-
put of the voltage regulator, a constant voltage is available for
the load which creates a constant machine performance which
is immune to variations in the supply system.

■ Selection and ordering data
Rated voltage: PRI = SEC: 400 V, 50 Hz to 60 Hz PU (UNIT, SET, M) = 1

PS = 1 unit (You can order this
quantity or a multiple thereof.)

PG = 114
.

Further versions with higher outputs up to 2000 kVA,
voltages up to 1 kVA and control ranges up to +/– 30 %
are available on request.

Settling
time

Rated
power
Pn

DT For symmetrical mains voltage Cu
weight
per PU
approx.

Total
weight
per PU
approx.

DT For asymmetrical mains voltage Cu
weight
per PU
approx.

Total
weight
per PU
approx.

Order No. Price
per PU

Order No. Price
per PU

s kVA kg kg kg kg

Control range for input voltage: +10 % to -10 %
1.5 6.8 X 4FL23 01-3CN 3.900 80.000 X 4FL23 02-3CN 3.900 80.000
1.5 11 D 4FL28 01-3CN 4.800 80.000 X 4FL28 02-3CN 4.800 80.000
1.5 17 X 4FL33 01-3CN 8.400 90.000 X 4FL33 02-3CN 8.400 90.000

1.5 25 X 4FL38 01-3CN 10.500 110.000 X 4FL38 02-3CN 10.500 110.000
1.5 34 X 4FL43 01-3CN 15.300 150.000 X 4FL43 02-3CN 15.300 150.000
1.5 51 D 4FL46 01-3CN 25.500 210.000 X 4FL46 02-3CN 25.500 210.000

1.5 68 X 4FL49 01-3CN 32.400 240.000 X 4FL49 02-3CN 32.400 240.000
2.5 95 X 4FL51 01-3CN 47.200 320.000 X 4FL51 02-3CN 47.200 320.000
2.5 190 X 4FL53 01-3CN 80.800 400.000 X 4FL53 02-3CN 80.800 400.000

Control range for input voltage: +15 % to -15 %
1.5 4.2 X 4FL18 11-3CN 3.900 80.000 X 4FL18 12-3CN 3.900 80.000
1.5 7 X 4FL24 11-3CN 4.800 80.000 X 4FL24 12-3CN 4.800 80.000
1.5 11 X 4FL28 11-3CN 8.400 90.000 D 4FL28 12-3CN 8.400 90.000

1.5 16 X 4FL32 11-3CN 10.500 110.000 X 4FL32 12-3CN 10.500 110.000
1.5 21 X 4FL35 11-3CN 15.300 150.000 X 4FL35 12-3CN 15.300 150.000
1.5 32 X 4FL42 11-3CN 25.500 210.000 X 4FL42 12-3CN 25.500 210.000

1.5 42 X 4FL45 11-3CN 32.400 240.000 X 4FL45 12-3CN 32.400 240.000
2.5 60 X 4FL47 11-3CN 47.200 320.000 D 4FL47 12-3CN 47.200 320.000
2.5 110 X 4FL52 11-3CN 80.800 400.000 D 4FL52 12-3CN 80.800 400.000

Control range for input voltage: +20 % to -20 %
1.5 3 X 4FL15 21-3CN 3.900 80.000 X 4FL15 22-3CN 3.900 80.000
1.5 4.8 X 4FL19 21-3CN 4.800 80.000 X 4FL19 22-3CN 4.800 80.000
1.5 7.5 X 4FL25 21-3CN 8.400 90.000 X 4FL25 22-3CN 8.400 90.000

1.5 11 X 4FL28 21-3CN 10.500 110.000 X 4FL28 22-3CN 10.500 110.000
1.5 15 X 4FL31 21-3CN 15.300 150.000 X 4FL31 22-3CN 15.300 150.000
1.5 22.5 X 4FL37 21-3CN 25.500 210.000 D 4FL37 22-3CN 25.500 210.000

1.5 30 X 4FL40 21-3CN 32.400 240.000 X 4FL40 22-3CN 32.400 240.000
2.5 42 X 4FL45 21-3CN 50.000 320.000 X 4FL45 22-3CN 51.500 320.000
2.5 84 X 4FL50 21-3CN 82.600 400.000 X 4FL50 22-3CN 84.600 400.000

LV1_09_Gesamt_EN.book Seite 88 Mittwoch, 11. Februar 2009 3:54 15

© Siemens AG 2009

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