Comparison between new and old

Compare this with the existing product you are using.

SC-4-0
Existing products
SC18XA
New products

The front view may not provide precise dimension comparisons.
For accurate measurements, please consult the dimension data.

Search result new product

New product
Type SC-03 SC09X
Appearance SC-03 SC09X

Compatibility - Dimensions: 〇
Screw mounting dimensions: ◎
Screw size: ◎
Auxiliary contact configuration: ◎
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

9 / 7 9 / 9
Conventional free air thermal current (Ith) [A] 20 20
Main terminal screw size M3.5 M3.5
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

1NO, 1NC

(1a, 1b)

1NO, 1NC

(1a, 1b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

2 2
Mechanical 10 10
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 90 66
Sealed 9 7.2
DC operating [W]

() indicates low
consumption type

Inrush 7 3.9(2.4)
Sealed 7 3.9(2.4)
External Dimensions

W × H × D [mm]

AC operating 43×81×80 43×80×78
DC operating 43×81×107 43×80×96
Remarks - -
New product
Type SC-0 SC12X
Appearance SC-0 SC12X

Compatibility - Dimensions: 〇
Screw mounting dimensions: ◎
Screw size: ◎
Auxiliary contact configuration: ◎
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

12 / 9 12 / 12
Conventional free air thermal current (Ith) [A] 20 20
Main terminal screw size M3.5 M3.5
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

1NO, 1NC

(1a, 1b)

1NO, 1NC

(1a, 1b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

2 2
Mechanical 10 10
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 90 66
Sealed 9 7.2
DC operating [W]

() indicates low
consumption type

Inrush 7 3.9(2.4)
Sealed 7 3.9(2.4)
External Dimensions

W × H × D [mm]

AC operating 43×81×80 43×80×78
DC operating 43×81×107 43×80×96
Remarks - -
New product
Type SC-05 SC12X
+ SZ3AS1 (Side mounting)
SC12X
+ SZ3A11 (Front mounting)
Appearance SC-05 SC12X + SZ3AS1 (Side mounting)

SC12X + SZ3A11 (Front mounting)

Compatibility - Dimensions: ◎
Screw mounting dimensions: ◎
Screw size: ◎
Auxiliary contact configuration: 〇
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

Dimensions: ×
Screw mounting dimensions: ◎
Screw size: ◎
Auxiliary contact configuration: 〇
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

12 / 9 12 / 12 12 / 12
Conventional free air thermal current (Ith) [A] 20 20 20
Main terminal screw size M3.5 M3.5 M3.5
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

2NO, 1NO+1NC, 2NC

(2a, 1a1b, 2b)

2NO+1NC, 1NO+2NC

(2a1b, 1a2b)

2NO+1NC, 1NO+2NC

(2a1b, 1a2b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

2 2 2
Mechanical 10 10 10
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 90 66 66
Sealed 9 7.2 7.2
DC operating [W]

() indicates low
consumption type

Inrush 7 3.9(2.4) 3.9(2.4)
Sealed 7 3.9(2.4) 3.9(2.4)
External Dimensions

W × H × D [mm]

AC operating 53×81×80 53×80×78 43×80×111
DC operating 53×81×107 53×80×96 43×80×129
Remarks - Terminal numbers and terminal arrangement will be changed.
New product
Type SC-4-0 SC18X
Appearance SC-4-0 SC18X

Compatibility - Dimensions: ×
Screw mounting dimensions: ◎
Screw size: ×
Auxiliary contact configuration: ◎
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

16 / 13 18 / 18
Conventional free air thermal current (Ith) [A] 25 25
Main terminal screw size M4 M3.5
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

1NO, 1NC

(1a, 1b)

1NO, 1NC

(1a, 1b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

1.5 1.5
Mechanical 10 10
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 90 66
Sealed 9 7.2
DC operating [W]

() indicates low
consumption type

Inrush 7 3.9(2.4)
Sealed 7 3.9(2.4)
External Dimensions

W × H × D [mm]

AC operating 53×81×81 43×80×78
DC operating 53×81×108 43×80×96
Remarks - -
New product
Type SC-4-1 SC20X
Appearance SC-4-1 SC20X

Compatibility - Dimensions: ◎
Screw mounting dimensions: ◎
Screw size: ◎
Auxiliary contact configuration: ◎
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

22 / 17 20 / 20
Conventional free air thermal current (Ith) [A] 32 32
Main terminal screw size M4 M4
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

1NO, 1NC

(1a, 1b)

1NO, 1NC

(1a, 1b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

2 2
Mechanical 10 10
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 90 90
Sealed 9 9
DC operating [W]

() indicates low
consumption type

Inrush 7 4.6(2.4)
Sealed 7 4.6(2.4)
External Dimensions

W × H × D [mm]

AC operating 53×81×81 53×80×82
DC operating 53×81×108 53×80×108
Remarks - -
New product
Type SC-5-1 SC20D
Appearance SC-5-1 SC20D

Compatibility - Dimensions: ◎
Screw mounting dimensions: ◎
Screw size: ◎
Auxiliary contact configuration: ◎*1
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

22 / 17 20 / 20
Conventional free air thermal current (Ith) [A] 32 32
Main terminal screw size M4 M4
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

2NO, 1NO+1NC, 2NC

(2a, 1a1b, 2b)

2NO, 1NO+1NC, 2NC

(2a, 1a1b, 2b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

2 2
Mechanical 10 10
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 90 90
Sealed 9 9
DC operating [W]

() indicates low
consumption type

Inrush 7 4.6(2.4)
Sealed 7 4.6(2.4)
External Dimensions

W × H × D [mm]

AC operating 64×81×81 64×80×82
DC operating 64×81×108 64×80×108
Remarks - *1: If you are using 2NO+2NC (2a2b),
please refer to the catalog for details.
New product
Type SC-N1 SC26X SC26D SC32X
Appearance SC-N1 SC26X

SC26D

SC32X

Compatibility - Dimensions: ×
Screw mounting
dimensions: 〇*2
Screw size: ×
Auxiliary contact
configuration: ×
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

Dimensions: ×
Screw mounting
dimensions: 〇*2
Screw size: ×
Auxiliary contact
configuration: ×
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

Dimensions: ×
Screw mounting
dimensions: 〇*2
Screw size: ×
Auxiliary contact
configuration: ×
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

32 / 25 26 / 26 26 / 26 32 / 32
Conventional free air thermal current (Ith) [A] 50 50 50 50
Main terminal screw size M5 M4 M4 M4
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

2NO+2NC

(2a2b)

1NO, 1NC

(1a, 1b)

2NO, 1NO+1NC, 2NC

(2a, 1a1b, 2b)

1NO, 1NC

(1a, 1b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

2 2 2 2
Mechanical 10 10 10 10
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 120 90 90 90
Sealed 12.7 9 9 9
DC operating [W]

() indicates low
consumption type

Inrush 9 4.6(2.4) 4.6(2.4) 4.6(2.4)
Sealed 9 4.6(2.4) 4.6(2.4) 4.6(2.4)
External Dimensions

W × H × D [mm]

AC operating 74×87×96 53×80×82 64×80×82 53×80×82
DC operating 74×87×122 53×80×108 64×80×108 53×80×108
Remarks - *2: Please use the adapter plate (SZ3AP26D).
New product
Type SC-N2 SC38X SC38D SC40X
Appearance SC-N2 SC38X

SC38D

SC40X

Compatibility - Dimensions: ×
Screw mounting
dimensions: 〇*3
Screw size: ×
Auxiliary contact
configuration: ×
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

Dimensions: ×
Screw mounting
dimensions: 〇*3
Screw size: ×
Auxiliary contact
configuration: ×*1
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

Dimensions: ×
Screw mounting
dimensions: ×
Screw size: 〇
Auxiliary contact
configuration: ×
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

40 / 32 38 / 38 38 / 38 40 / 40
Conventional free air thermal current (Ith) [A] 60 50 50 80
Main terminal screw size M5 M4 M4 M5
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

2NO+2NC

(2a2b)

1NO, 1NC

(1a, 1b)

2NO, 1NO+1NC, 2NC

(2a, 1a1b, 2b)

1NO+1NC

(1a1b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

2 2 2 2
Mechanical 10 10 10 5
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 120 90 90 120
Sealed 12.7 9 9 12.7
DC operating [W]

() indicates low
consumption type

Inrush 9 4.6(2.4) 4.6(2.4) 7.5
Sealed 9 4.6(2.4) 4.6(2.4) 7.5
External Dimensions

W × H × D [mm]

AC operating 74×87×96 53×80×82 64×80×82 64×89×93
DC operating 74×87×122 53×80×108 64×80×108 64×89×125
Remarks - *3: Please use the adapter plate
(SZ3AP26D).
*1: If you are using 2NO+2NC (2a2b),
please refer to the catalog for
details.
*3: Please use the adapter plate
(SZ3AP26D).
-
New product
Type SC-N2S SC50X
Appearance SC-N2S SC50X

Compatibility - Dimensions: ×
Screw mounting dimensions: 〇*4
Screw size: ×
Auxiliary contact configuration: ×*1
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

50 / 48 50 / 50
Conventional free air thermal current (Ith) [A] 80 80
Main terminal screw size M6 M5
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

2NO+2NC

(2a2b)

1NO+1NC

(1a1b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

2 2
Mechanical 5 5
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 180 120
Sealed 13.3 12.7
DC operating [W]

() indicates low
consumption type

Inrush 12 7.5
Sealed 12 7.5
External Dimensions

W × H × D [mm]

AC operating 88×110×111 64×89×93
DC operating 88×110×130 64×89×125
Remarks - *1: If you are using 2NO+2NC (2a2b),
please refer to the catalog for details.
*4: Please use the adapter plate (SZ3AP50X).
New product
Type SC-N3 SC65X
Appearance SC-N3 SC65X

Compatibility - Dimensions: ×
Screw mounting dimensions: 〇*5
Screw size: ×
Auxiliary contact configuration: ×*1
Performance: 〇

◎: Compatible
〇: Almost no difference and
upwardly compatible
×: No compatibility/with
major changes

IEC / JIS Rating [A]

AC-3, AC-3e, 380-440V

65 / 65 65 / 65
Conventional free air thermal current (Ith) [A] 100 80
Main terminal screw size M6 M5
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

2NO+2NC

(2a2b)

1NO+1NC

(1a1b)

Durability [Million times] Electrical

AC-3, AC-3e, 220V

2 1.3
Mechanical 5 5
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 180 120
Sealed 13.3 12.7
DC operating [W]

() indicates low
consumption type

Inrush 12 7.5
Sealed 12 7.5
External Dimensions

W × H × D [mm]

AC operating 88×110×111 64×89×93
DC operating 88×110×130 64×89×125
Remarks - *1: If you are using 2NO+2NC (2a2b),
please refer to the catalog for details.
*5: Please use the adapter plate (SZ3AP50X).
New product
Type SH-4 SCH4X
Appearance SH-4 SCH4X
Conventional free air thermal current (Ith) [A] 10 10
Minimum switching voltage DC5V DC5V
Minimum switching current 3mA 3mA
Terminal screw size M3.5 M3.5
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

Standard 4NO, 3NO+1NC, 2NO+2NC

(4a, 3a1b, 2a2b)

4NO, 3NO+1NC, 2NO+2NC

(4a, 3a1b, 2a2b)

Low consumption - 4NO, 3NO+1NC, 2NO+2NC

(4a, 3a1b, 2a2b)

Maximum number of auxiliary contacts

(Additional auxiliary combination)

Standard coil 8(4+4) 8(4+4)
Low consumption - 6(4+2)
Durability [Million times] Mechanical 10 10
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 90 66
Sealed 9 7.2
DC operating [W]

() indicates low
consumption type

Inrush 7 3.9(2.4)
Sealed 7 3.9(2.4)
External Dimensions

W × H × D [mm]

AC operating 43×81×80 43×80×78
DC operating 43×81×107 43×80×96
Remarks - -
New product
Type SH-5 SCH4X
+ SZ3A (Front mounting)
SCH4X
+ SZ3AS (Side mounting)
Appearance SH-5 SCH4X + Front mounting SCH4X + Side mounting
Conventional free air thermal current (Ith) [A] 10 10 10
Minimum switching voltage DC5V DC5V DC5V
Minimum switching current 3mA 3mA 3mA
Terminal screw size M3.5 M3.5 M3.5
Number of auxiliary contacts

("1NO, 1NC" indicates 1NO or 1NC)

Standard 5NO, 4NO+1NC, 3NO+2NC,
2NO+3NC, 1NO+4NC, 5NC

(5a, 4a1b, 3a2b, 2a3b, 1a4b, 5b)

8NO, 7N1+1NC, 6NO+2NC,
5NO+3NC, 4NO+4NC,
6NO, 5NO+1NC, 4NO+2NC,
3NO+3NC, 2NO+4NC

(8a, 7a1b, 6a2b, 5a3b, 4a4b,
6a, 5a1b, 4a2b, 3a3b, 2a4b)

6NO+2NC, 5NO+3NC, 4NO+4NC

(6a2b, 5a3b, 4a4b) *6

5NO+1NC, 4NO+2NC, 3NO+3NC

(5a1b, 4a2b, 3a3b, 1a5b) *7

Low consumption - 6NO, 5NO+1NC, 4NO+2NC,
3NO+3NC, 2NO+4NC

(6a, 5a1b, 4a2b, 3a3b, 2a4b)

5NO+1NC, 4NO+2NC, 3NO+3NC

(5a1b, 4a2b, 3a3b)

Maximum number of auxiliary contacts

(Additional auxiliary combination)

Standard coil 9(5+4) 8(4+5) 8(4+4)
Low consumption - 6(4+3) 6(4+2)
Durability [Million times] Mechanical 10 10 10
Magnet
Capacity
AC operating [VA]

200V 50Hz

Inrush 90 66 66
Sealed 9 7.2 7.2
DC operating [W]

() indicates low
consumption type

Inrush 7 3.9(2.4) 3.9(2.4)
Sealed 7 3.9(2.4) 3.9(2.4)
External Dimensions

W × H × D [mm]

AC operating 53×81×80 43×80×111 53×80×78 *1
64×80×78 *2
DC operating 53×81×107 43×80×129 53×80×96 *6
64×80×96 *7
Remarks - Terminal numbers and terminal
arrangement will be changed.
Terminal numbers and terminal
arrangement will be changed.
*6 In case you add one auxiliary
contact unit.
*7 In case you add two auxiliary
contact units.

You can download the list of compatible products.

List of Compatible
Products