MOTOR PROTECTION CIRCUIT BREAKERS MS

MERZ Motor protection circuit breakers are special type of circuit breakers, designed for protection of wide range of single-phase and three-phase AC motors against overload and short circuit. They are used in industry, small machines, agricultural machines, compressors etc.

Our MERZ MS25 is resistant to contact welding and enables low contact heating. It automatically switches-off at over-current with thermal or magnetic release. It has vertical and horizontal operational position and wide variety of snap-on auxilary switch blocks and accessories. It can be adapted to the needs of users.

Benefits

  • Special enclosure for motor protection switches
  • IE3 READY
  • Acc. IEC 60947-4-1, DIN EN 60947-4-1, VDE 0660-102
  • The actuating current of the short circuit trip is 15 x lu .
  • The MPCBs are self protected up to 6.3 A at 400 V
  • Emergency stop push-button / with keylock
  • Signal lamps in green / red / white
  • Connection blocks
  • With CEE device plug 16A, 3P+N+PE, 400V 6h
  • With Under-voltage release 230 V / 400 V 50Hz
  • With CEE-Phase inverter /Lockout handle for 3 padlocks
Download (1.1 MB)

DESIGN

Serie CM.7100 (with CEE device plug)
Serie DM.8000 (without CEE device plug)

Motor Protective Circuit Breakers MS25

Rated current 0,1 - 25 A

INSULATED ENCLOSURE CM.7100 with Motor Protective Circuit Breakers MS25

mit CEE-Gerätestecker 16A, 3P+N+PE, 400V 6h

ISO-Gehäuse CM.7100 mit Motorschutzschalter

mit CEE-Gerätestecker 16A, 3P+N+PE, 400V 6h

und Not-Aus-Schlagtaste rastend

ISO-Gehäuse CM.7100 mit Motorschutzschalter

mit CEE-Gerätestecker 16A, 3P+N+PE, 400V 6h

und Vorhängeschlosssperre

ISO-Gehäuse CM.7100 /.. -PH-V mit Motorschutzschalter

mit CEE-Phasenwendergerätestecker 16A, 3P+N+PE, 400V 6h

und Vorhängeschlosssperre

Iso-Gehäuse DM.8000 ohne CEE-Stecker

Iso-Gehäuse DM.8000 ohne CEE-Stecker

mit Not-Aus tastend

Iso-Gehäuse DM.8000 ohne CEE-Stecker

mit Not-Aus verrastend

Iso-Gehäuse DM.8000 ohne CEE-Stecker

mit Vorhängeschlosssperre

Dimensioning

Motor breaker Circuit Breaker
Enclosures CM.7100 / DM.8000

Front view

Side view

3D view

Tripping characteristics

Y = Tripping time t(s)
X = Operational current x I (A)

Front view CM.7100

Side view CM.7100

Front view DM.8000

Side view DM.8000

Download

Accessories

Auxiliary contact block

for lateral mounting

Shunt release A

for inside mounting

Under-voltage release U 230 V / 400 V

for inside mounting with connecting cable (140 mm long)

INSULATED ENCLOSURES IP55

O-55 and CP-55

Emergeny-Stop-Push-Button

latching, turn to release red, on yellow surface

Emergeny-Stop-Push-Button

latching, turn to release red, on yellow surface with keylock

PADLOCKING FACILITY

for up to three padlocks

Indicator Light

With glow bulb nominal rated voltage 250 V / 400 V

Push-button diaphragm IP55

Connection blocks

80 mm - 250 mm

Supply block (25 mm2)

Protection for connection cable

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