Siemens AC-3 Datasheet Page 18
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18
Accessories and ordering data
1. Mechanical interlocking kit
Mechanical interlock is required when the supply from two
different sources is available. Also the same is required for the
application involving reversing of motor. Here two contactors
are mechanically interlocked with the help of mechanical
interlock kit. This ensures closing of only one contactor at a
time. Thus prevents a short circuit upon load changeover from
one contactor to another.
For Contactor MLFB
Std. pkg.
AC3 Rating Contactor
(nos.)
9 to 38A 3TF30 to 35 3TX4 091-1A
#
10
45/63/70A 3TF46/47/47-7 3TX7 466-1YA0 2
75/85A 3TF48/49 3TX7 486-1YA0 2
110/140A 3TF50/51 3TX7 506-1YA0 2
170/205A 3TF52/53 3TX7 526-1YA0 2
250/300A 3TF54/55 3TX7 546-1YA0 2
400 A 3TF56 3TX7 566-1YA0 2
110/170 A 3TF50/52 3TX7 526-1YA09 1
170/250 A 3TF52/54 3TX7 546-1YA09 1
#: W/O base plate (not required)
RC element
Varistor
The effective increase in the capacitance of
the coil circuit reduces the amplitude and rate
of rise of switch off overvoltage spikes to such
an extend that no rapid restriking occur.
Varistor limit the maximum value of the
overvoltage because they become highly
conductive above a threshold value. Until this
threshold value is reached shower discharge
occurs for small duration.
Selection table:
Surge suppressor (Varistor) for 3TF30-3TF35
Coil Voltage
Type
Std. pkg.
AC DC
(nos.)
24 - 48 V 24 - 70V 3TX7 402-3GY1
48 - 127V 70 - 150V 3TX7 402-3HY1
127 - 240V 150 - 250V 3TX7 402-3JY1 10
240 - 400V – 3TX7 402-3KY1
400 - 600V – 3TX7 402-3LY1
Surge suppressor (Varistor) for 3TF46-56
Coil Voltage
Type
Std. pkg.
AC DC
(nos.)
Less than 48V 24 - 70V 3TX7 462-3GY1
48 - 127V 70 - 150V 3TX7 462-3HY1
127 - 240V 150 - 250V 3TX7 462-3JY1 10
240 - 400V – 3TX7 462-3KY1
400 - 600V – 3TX7 462-3LY1
Surge suppressor (RC Element) for 3TF30-3TF35
Coil Voltage
Type
Std. pkg.
AC DC
(nos.)
24 - 48V 24 - 70V 3TX7 402-3RY2
48 - 127V 70 - 150V 3TX7 402-3SY2
127 - 240V 150 - 250 V 3TX7 402-3TY2 10
240 - 400V – 3TX7 402-3UY2
400 - 460V – 3TX7 402-3VY2
RC Element:
3. Connector
The 3TS90 connector is used to mount the motor protection
circuit breaker 3VU on the contactor 3TF with screw terminals.
It enables mechanical and electrical connection between
contactor and motor protection circuit breaker.
Varistor:
2. Surge suppressor
It is used to reduce the effect of switching overvoltages created
during the opening of inductive circuits. Typically they are
mounted outside the body of the contactor, and are connected
in parallel with the coil terminals. Various techniques for the
suppression of switching overvoltages can be employed. For
example: RC element, Varistor etc.
Range:
Size
MPCB Contactor
Std.
of
Current
AC3 MLFB of pkg.
connector MLFB
Rating
MLFB Current Connector (nos.)
Rating
I 3VU13 0.16 to 3TF30 / 31 9 / 12 A 3TS90 01-8K 1
20A
II 3VU13 6 to 25A 3TF32 / 33 16 / 22A 3TS90 02-8K 1
Benefits:
Direct mounting of 3VU MPCB on 3TF contactor eliminates the
need of power wiring and ensures secure connection. In addition,
the assembly time and size of the feeder is reduced which results
in cost saving. The overall assembly also looks contemporary.
- Datasheet 2010 1
- Answers for industry 1
- Contactor Relays 3TH30 3
- Selection and ordering data 4
- Dimensional drawings 5
- Power Contactors 3TF 7
- High performance 8
- High reliability 8
- User friendliness and safety 8
- 2 Pole AC contactors - 3TF 9
- Technical data 10
- Electrical Life Curves 14
- Typical Circuit Diagrams 15
- Auto Transformer starter 16
- Permissible Mounting Position 17
- Terminal Designation 17
- Selection table: 18
- Accessories and ordering data 18
- Spares and ordering data 19
- Dimensional drawing 20
- Useful information 23
- Contact life calculation: 23
- Contactors for Hoisting Duty 25
- Technical Information 26
- Useful technical information 28
- AC1 Duty Contactors 3TK5 29
- Recovery time 34
- Benefits and features 34
- Selection and ordering data: 35
- Technical Data 36
- Characteristic Curves 37
- Dimensional Drawing 39
- 3UA52 mounted on 3TF 32/33 40
- 3UA55 mounted on 3TF 34/35 41
- 3UA58 with independent 41
- 3UA5800 mounted on 3TF46/47 41
- 3UA5830 with individual 42
- 3UA5830 mounting on 3TF50 42
- 3UA6230 CT Operated Birelay 43
- 3UA68 CT Operated Birelay 43
- 3UC50 CT Operated Birelay 44
- 3VU13 and 3VU16 45
- Times set current 49
- Accessories: 50
- Connection diagrams 51
- Dimensional Drawings 53
- Starters 55
- Application 56
- Standard 56
- Ordering data 57
- Spares for starters 58
- Single line diagram SLD 59
- Use M4 screws for mounting 62
- C1: DOL without relay 64
- Current/rated op. current 66
- C. Industrial Starter: 67
- L lph Set-Range Available 68
- Your partners 72
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