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Relay selection guide

 

Heavy duty relays

Relay type

 Contacts

Rated current

 Remarks

 Mounting

 

 

AC1

 

 

Instantaneous relays

D

4CO

10A

Standard D

Plug-in (smitt-style)

D-B

4CO

10A

Standard D with option B (Magnetic arc blow-out)

Plug-in (smitt-style)

D-RB

3CO

10A

Standard D with magnetic arc blow-out & fast switching (option R & B)

Plug-in (smitt-style)

D-R

3CO

10A

Standard D with option R (including fast switching) 

Plug-in (smitt-style)

D-YB

2DM-DB

10A

Magnetic arc blow-out

Plug-in (smitt-style)

DGG

2CO

10A

Extreme sensitive coil

Plug-in (smitt-style)

D8

8CO

10A

8 Changeover contacts

Plug-in (smitt-style)

D-E

4CO

-

Gold plated contacts

Plug-in (smitt-style)

DI

2CO

10A

Current monitoring relay

Plug-in (smitt-style)

D-BX5

2NO+2NC

10A

Magnetic arc blow-out & contact gap 2mm

Plug-in (smitt-style)

D-YBX5

1DM-DB

10A

Magnetic arc blow-out & contact gap 4mm

Plug-in (smitt-style)

CU-G

2CO

6A

Universal relay DC coil

Plug-in Miniature / also avaliable in PCB

CU-W

2CO

6A

Universal relay AC coil

Plug-in Miniature / also avaliable in PCB

CU-B

2CO

8A

Universal relay with magnetic arc blow out DC coil

Plug-in Miniature / also avaliable in PCB

CU-C

2CO

8A

Universal relay with magnetic arc blow out AC coil

Plug-in Miniature / also avaliable in PCB

CU-A

2CO

6A

Universal relay wide coil voltage range DC coil

Plug-in Miniature / also avaliable in PCB

CU-D

2CO

6A

Universal relay wide coil voltage range AC coil

Plug-in Miniature / also avaliable in PCB

CU-U

1DM-DB

6A

Universal relay DM-DB contacts DC coil

Plug-in Miniature / also avaliable in PCB

CU-V

1DM-DB

6A

Universal relay DM-DB contacts AC coil

Plug-in Miniature / also avaliable in PCB

CU-I

1CO

6A

Universal relay current DC coil

Plug-in Miniature / also avaliable in PCB

A-400

4CO, DM-DB

8A

Safety / critial relay

Plug-in (mors-style)

B-400

4CO, DM-DB weld no transfer

12A

Safety / critial relay

Plug-in (mors-style)

AID

2CO

-

Earth leakage indication relay

Plug-in (smitt-style)

Latching / bistable relays

B-D

3CO+1NC

10A

Latching (magnetic) relay

Plug-in (smitt-style)

KDN

8CO

10A

Latching (machanical) relay

Plug-in (smitt-style)

KCS

2CO

6A

Latching (machanical) relay

Faston 2,8 x 0,8

KCD

2CO

6A

Latching (machanical) relay

Plug-in (smitt-style)

Pulse relays

IOD

 2NO, 2NC, 1NO OR 1NC

100 mA

Pulse transducing relay

Plug-in (smitt-style)

EIOD

2NO, 2NC, 1NO OR 1NC

100 mA

Pulse transducing relay

Plug-in (smitt-style)

Time relays

TDB2

2CO

6A

Time relay, delay on

Plug-in (smitt-style)

TDB4

4CO

10A

Time relay, delay on

Plug-in (smitt-style)

TDDB

4CO (2CO direct + 2CO time delayed)

8A

Time relay, delay on

Plug-in (smitt-style)

TDE

1CO + 1NO

6A

Time relay, delay off

Plug-in (smitt-style)

TDE3

3CO

10A

Time relay, delay off

Plug-in (smitt-style)

TDE4

4CO

10A

Time relay, delay off

Plug-in (smitt-style)

TDBE

2CO

6A

Time relay, delay on & off

Plug-in (smitt-style)

FDA

2CO

8A

Time relay, flashing

Plug-in (smitt-style)

FDA4

4CO

10A

Time relay, flashing

Plug-in (smitt-style)

FDC

2CO

6A

Time relay, flashing

Plug-in (smitt-style)

WDE4

4CO

10A

One shot relay

Plug-in (smitt-style)

WDDE

2CO+2NC

8A

One shot, on relay

Plug-in (smitt-style)

WDDF

2CO+2NC

8A

One shot, off relay

Plug-in (smitt-style)

Measuring & monitoring relays

UMD

1CO+1NO

6A

Voltage monitoring relay

Plug-in (smitt-style)

ACD

1CO+1NO

6A

Battery voltage monitoring relay

Plug-in (smitt-style)

SMD

1CO

2A

Current monitoring relay

Plug-in (smitt-style)

 

General purpose relays

 

Relay type

 Contacts

Rated current

 Remarks

 Mounting

 

 

AC1

 

 

Instantaneous relays

I

1CO

6A

Universal modular 6,2mm relay

Modular

M2

2CO

12A

Universal miniature relay

Plug-in Miniature

M3

3CO

10A

Universal miniature relay

Plug-in Miniature

M4

4CO

6A

Universal miniature relay

Plug-in Miniature

G08

2CO

10A

Universal relay

Plug-in

G11

3CO

10A

Universal relay

Plug-in

L2

2CO

12A

Universal miniature relay

Plug-in (Faston 187)

XT-17M-161

1CO

16A

Universal relay

Modular

XT-17M-163

3CO

16A

Universal relay

Modular

XT-17M-316 / 24

3CO

16A

Universal relay

Modular

XT-17M-316 / 230

3CO

16A

Universal relay

Modular

Latching/bistable relays

 

 

 

 

XT-17M-L

2CO

16A

Latching relay

Modular

Time relays

 

 

 

 

XT-11P-C2

2CO

8A

Multifunction relay

Modular

XT-17M-A

1CO

16A

Delay on relay

Modular

XT-17M-2XA

2CO

16A

Delay on relay

Modular

XT-17M-B

1CO

16A

Delay off relay

Modular

XT-17M-D

2CO

8A

Delay on & off relay

Modular

XT-17M-C1

1CO

16A

Multifunction relay

Modular

XT-17M-C3

3CO

8A

Multifunction relay

Modular

XT-17M-P

1CO

16A

Recycling relay

Modular

XT-17M-S

2CO

16A

Star Delta relay

Modular

Measuring & monitoring relays

XM-17M-VA230

1CO

16A

Voltage monitoring relay

Modular

XM-17M-VD24

1CO

16A

Voltage monitoring relay

Modular

XM-17M-2xVA230

2CO

16A

Voltage monitoring relay

Modular

XM-17M-VA400LN

1CO

8A

Under / over voltage

Modular

XM-17M-M400L

1CO

16A

Phase & failure

Modular

XM-17M-M400LN

1CO

16A

Phase & failure

Modular

XM-17M-IA20U

1CO

8A

AC current

Modular

XM-52M-VA500

2CO

16A

Under / over voltage

Modular

XM-52M-M400L

2CO

16A

Complete monitoring

Modular

XM-52M-M400LN

2CO

16A

Complete monitoring

Modular

XM-52M-IAD16

2CO

16A

AC / DC current

Modular

 

Modular: Industrial housing, 35mm DIN/Rail mounting
Smitt-style: Typical D-series pinning, 14 silver plated pins
Mors-style: Typical 400-series pinning, 16 silver plated pins
PCB: Printed circuit board, soldering

                                                                                © Mors Smitt 2014