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Klockner Moeller Molded-Case Circuit Breakers, series NZM7

Klockner Moeller NZM7 Circuit Breakers

Klockner Moeller NZM7 Circuit Breakers
NZM7-60-NA

NZM7-60-NA

see more photos
NZM7 Disconnect Switches, no trip unit
AmpsCatalog #Price
60 NZM7-60-NA photo 296.40
100 NZM7-100-NA photo 370.80
125 NZM7-125-NA photo 504.00
150 NZM7-150-NA photo 516.00
200 NZM7-200-NA photo 716.40
 
NZM7 Breakers, Adjustable Thermal Trip
for use as motor protectors.
AmpsCatalog #Price
25 - 40 NZM7-40N-NA 427.20
40 - 60 NZM7-63N-NA
60 - 80 NZM7-80N-NA 472.80
80 - 100 NZM7-100N-NA
100 - 125 NZM7-125N-NA 1074.00
125 - 150 NZM7-150N-NA 1447.20
 
NZM7 Breakers, Fixed Thermal Trip
for use as branch circuit protection
AmpsCatalog #Price
25 NZM7A-25N-NA 427.20
30 NZM7A-30N-NA
35 NZM7A-35N-NA
40 NZM7A-40N-NA
50 NZM7A-50N-NA
60 NZM7A-60N-NA
70 NZM7A-70N-NA 472.20
80 NZM7A-80N-NA
90 NZM7A-90N-NA
100 NZM7A-100N-NA
125 NZM7A-125N-NA 1074.00
150 NZM7A-150N-NA 1447.20.00
 
Accessories for NZM7 series
DescriptionCatalog #Price
gray door handle
padlockable
H-NZM7-NA photo 349.00
red/yellow door handle
padlockable
RH-NZM7-NA photo 349.00
rotary drive mechanism
converts toggle to rotary
padlockable
DA-NZM7 photo 236.00
rotary drive mechanism
converts toggle to rotary
not padlockable
DAOV-NZM7 photo 232.00
drive shaft extension
mounting depth 175-400mm
A400-NZM7 photo 42.00
drive shaft extension
mounting depth 260-600mm
A600-NZM7 photo 48.00
NHi
standard auxiliary contact.
max of 2 contacts.
EK10 photo
(1 N.O. contact)
18.50
EK01 photo
(1 N.C. contact)
early-make auxiliary contacts VHi-NZM7 photo 62.00
RHi
trip-indicating auxiliary contact
max of 1 contact
EK10 photo
(1 N.O. contact)
18.50
EK01 photo
(1 N.C. contact)
undervoltage trip U-NZM7 photo 264.00
undervoltage trip
with early-make contacts
UHi-NZM7 298.00
shunt trip A-NZM7 264.00
shunt trip
with early-make contacts
AVHi-NZM7 298.00
side-wall drive mechanism
for rotary handle on left side
SWA-NZM7-L photo 349.00
side-wall drive mechanism
for rotary handle on right side
SWA-NZM7-R photo
Mounting bracket
for side-wall rotary handle
MSWA-NZM7 photo 67.00
terminal shield, 3-pole
fits top or bottom
KA250-NZM7 15.00
 


Selection of a Replacement Circuit Breaker

Here are some questions we need to ask in order to select the best replacement unit.


  1. Please provide the full part number of the old unit.

  2. What is the machine voltage, the 3-phase power at the main lugs?

    If it is 480 Volts, we need to know if it is 480-Y or 480-Delta.
    To determine this, measure the voltage from each leg to ground or neutral.
    If all 3 are roughly to same, it's 480-Y and if one leg is much higher than the other 2, then it is 480-Delta.

  3. Are there any small wires connected to the unit, other than on the main lugs?

    If so, there may be an undervoltage trip or auxiliary contacts. Look for small labels, marked "Aux. Switch" or "Undervoltage Release" and note the part numbers. If these are present, are you able to provide a copy of the wiring diagram?

  4. If your unit is adjustable (the yellow dial on the front), how many amps do you wish to set it to? The new units have different adjustment ranges.

  5. Is there an operating handle on the outside of the cabinet?   If so -

          - is it located on the door?
          - is it located on the right side wall of the cabinet?
          - is it located on the left side wall of the cabinet?
          - is it located in the back of the cabinet?

    Each location requires different hardware.

  6. Photos of the unit showing the installation and wiring are always helpful.





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