Repair and
Maintenance Switches

Repair and Maintenance Switches are used to safely shut down machines and facilities that are not directly connected to a control unit or may bare the risk, that the machine or facility starts operating during maintenance or repair activities. The handle of such switches must be lockable by interlocks in order to prevent workers from hazardous situations and must meet the same requirements as main switches according to EN 60204.

Benefits

  • Cable inlet both sides situated in line of the conduct
  • Optional in UV and weather-resistant design for outdoor use
  • Special enclosure for Cam and Compact Switch
  • Safety switch with securing clip
  • Comfortable wiring
  • Optional with pressure compensation element
  • Low enclosure shape
  • Switch insert plugged
  • Optionally with EMC accessories
  • IP-Rating IP65
  • DIN VDE 0106 Part 100 and VBG 4 -> finger safe
  • In red / yellow and black / gray available as main switch

Specifications

Short overview specifications

  Unit from to
Rated operating current Ie AC-21A A 16 630
Rated voltage Ue V 690 -
Rated uninterrupted current (open) Iu =Ith A 20 630
Conventional enclosed thermal current Ithe A 20 -
Rated insulation voltage Ui Insulation group C under VDE 0110 V 690 1000
show more technical data
MAKING BREAKING CAPACITY   UNIT FROM TO
(Compact and Cam Switches) Service category AC3      
Motor switch for optional switching 230 V 3~ kW 3 22
Motor switch for optional switching 400 V 3~ kW 5,5 45
Motor switch for optional switching 630 V 3~ kW 5,5 45
         
(Compact and Cam Switches) Service category AC23A(B)      
Motor switch 230 V 3~ kW 4 -
Main switch 400 V 3~ kW 7,5 280
Maintenance switch 630 V 3~ kW 9 150
         
(Compact Switches) Service category AC22A(B)      
Motor switch 230 V 3~ kW 25 -
Motor switch 400 V 3~ kW 25 630
Motor switch 630 V 3~ kW 25 315

Find out more

Download the complete specifications and get an overview of our high-performance products.

Complete specifications Compact Switches

Complete specifications Cam Switches

3D View

MERZ Enclosure series "I", especially designed for cam switch applications, high endurance plastic material for outdoor applications, UV resistant, resistant to atmospheric attack, Degree of protection IP65, EMC Accessories optionally available.

3D-Model: I1N-1550-Enclosure in red/yellow

Click on the image to activate the 3D view. You can move the model by dragging it with the mouse.

Design

Compact Switches enclosed
Cam Switches enclosed
EMC - ElectroMagnetical Environment

Plastic enclosure Series "89"

8900 red/yellow

with lockout handle for 3 padlocks

Plastic enclosure Series "89"

8901 black/grey

with lockout handle for 3 padlocks

Plastic enclosure Series "89"

8920 red/yellow

with lockout handle for 3 padlocks

Plastic enclosure Series "89"

8921 black/grey

with lockout handle for 3 padlocks

Plastic enclosure Series "89"

8940 red/yellow

with lockout handle for 3 padlocks

Plastic enclosure Series "89"

8941 black/grey

with lockout handle for 3 padlocks

Plastic enclosure Series "89"

8960 red/yellow

with lockout handle for 3 padlocks

Plastic enclosure Series "89"

8961 black/grey

with lockout handle for 3 padlocks

Plastic enclosure Series "89"

8980 red/yellow

with lockout handle for 3 padlocks

Plastic enclosure Series "89"

8981 black/grey

with lockout handle for 3 padlocks

Aluminium enclosure Series "AL"

AL 2-5 red/yellow - UL50E approved

with lockout handle for 3 padlocks

Aluminium enclosure Series "AL"

AL 2-5 black/grey - UL50E approved

with lockout handle for 3 padlocks

Aluminium enclosure Series "AL"

AL 2-5 black/black with metal lock ring

with lockout handle for 3 padlocks

Plastic enclosure Series "99"

9966 black/grey - UL50E approved - NEMA Type 4X

with lockout handle for 3 padlocks

Plastic enclosure Series "99"

9966 red/yellow - UL50E approved - NEMA Type 4X

with lockout handle for 3 padlocks

Plastic enclosure Series "99"

9968 black/grey - UL50E approved - NEMA Type 4X

with lockout handle for 3 padlocks

Plastic enclosure Series "99"

9968 red/yellow - UL50E approved - NEMA Type 4X

with lockout handle for 3 padlocks

Plastic enclosure series "i"

I1N red/yellow

with lockout handle for 3 padlocks

Plastic enclosure series "i"

I1N black/grey

with lockout handle for 3 padlocks

Plastic enclosure series "i"

I1N black/grey

with front plate without lockout handle

Plastic enclosure series "i"

I1N black/grey

with front plate and lockout handle for 1 or 2 padlocks

Plastic enclosure series "i"

I1N red/yellow

with front plate and lockout handle for 1 or 2 padlocks

Plastic enclosure series "i"

I1N black/grey

with front plate and key operation

Plastic enclosure series "i"

I2H black/grey

with lockout handle for 3 padlocks

Plastic enclosure series "i"

I2H red/yellow

with lockout handle for 3 padlocks

Plastic enclosure series "i"

I3H black/grey

with lockout handle for 3 padlocks

Plastic enclosure series "i"

I2H red/yellow

with lockout handle for 3 padlocks

Plastic enclosure series "i"

I3N black/grey

Safety-switch with cover locking

with lockout handle for 3 padlocks

Plastic enclosure series "i"

I7N red/yellow

with lockout handle for 3 padlocks

Plastic enclosure series "89"

8920/8940 black/grey

with lockout handle for 3 padlocks

Plastic enclosure series "89"

8960/8980 red/yellow

with lockout handle for 3 padlocks

Aluminium enclosure series "AL"

AL2-5 red/yellow

with lockout handle for 3 padlocks

EMC - ElectroMagnetical Environment

Assembly-Instruction Step 1

Install a standard MERZ Repair and Maintenance Switch ...

EMC - ElectroMagnetical Environment

Assembly-Instruction Step 2

... pull out the switch body ...

EMC - ElectroMagnetical Environment

Assembly-Instruction Step 3

... take the adequate EMC plate by hand and bend it ...

EMC - ElectroMagnetical Environment

Assembly-Instruction Step 4

... insert the plate without clamps into the box ...

EMC - ElectroMagnetical Environment

Assembly-Instruction Step 5

... install cable glands / cable entrances ...

EMC - ElectroMagnetical Environment

Assembly-Instruction Step 6

... insert the cables ...

EMC - ElectroMagnetical Environment

Assembly-Instruction Step 7

... attach in the switch insert ...

EMC - ElectroMagnetical Environment

Assembly-Instruction Step 8

... clip the EMC clamps on the shielding and screw it to the EMC plate. Wire up the switch and READY!

Contact Diagrams

Serie Compact Switches
Serie Cam Switches

Serie ML0 - ML3

A _ _ _/6.

Serie ML0 - ML3

A _ _ _/10.

Serie ML0 - ML3

A _ _ _/50.

Serie ML0 - ML3

A _ _ _/102.

Serie ML0 - ML3

A _ _ _/143.

Serie ML0 - ML3

A _ _ _/351.

Serie ML0 - ML3

A _ _ _/374.

Series MN

A _ _ _ /6.

Series MN

A _ _ _ /10.

Series MN

A _ _ _ /22.

Series MN

A _ _ _ /50.

Series MN

A _ _ _ /62.

Series MN

A _ _ _ /99.

Series MN

A _ _ _ /101.

Series MN

A _ _ _ /102.

Series MN

A _ _ _ /143.

Series MN

A _ _ _ /169.

Series MN

A _ _ _ /216.

Series MN

A _ _ _ /217.

Series MN

A _ _ _ /219.

Series MN

A _ _ _ /351.

Series MN

A _ _ _ /374.

Series MN

A _ _ _ /394.

Downloads Cam Switches

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Accessories

EMC shielding solution

Auxiliary contact 1NO + 1NC and 2KL Terminal 2-pole

Safety-switch with cover locking

Additional front plates

Pressure balance element DAE-M12

UV-Protection by design - enclosure I1 and I2