CalmountĀ® Installation Instructions
Phone  :  586.979.9955
Fax  :  586.979.9484

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CalmountĀ® and MulticalĀ® Brand Capacitors - Installation Instructions

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All Myron Zucker, Inc. Calmount® brand capacitors are made with state-of-the-art metallized cells designed for low electrical loss and long life. All wiring, connectors and other components are top quality. Each capacitor is housed in a powder coat painted steel enclosure fitted with a gasketed cover designed to provide both protection and easy installation. To ensure that you obtain satisfactory service from your Calmount® brand capacitor, please follow these installation instructions.

Calmount® brand capacitors can be connected either at the load (Circuit 1) or on the line (Circuit 2). In Circuit 2, the capacitor must be connected through a disconnect device. Both circuits must have overcurrent protection. (For sizing, see chart).


Capacitor lifetime is greatly reduced at high temperatures. Calmount® brand capacitors should be installed in cool locations with good ventilation. Mechanical requirements of mounting the capacitor must also be considered. In general, when selecting a mounting location:

  • Avoid obvious "hot spots," such as furnaces, transformers, heating ducts and direct sunlight.
  • Avoid locations with harmonic voltages or currents.
  • Allow at least three (3") around the capacitor for air circulation.
  • Allow mechanical clearances for:
    -- ducts and conduits (including future needs)
    -- construction
    -- machinery
    -- opening doors
    -- removal of the capacitor cover
  • Position the capacitor for convenient nippling to cabinet or conduit and for visibility of indicator lights.
  • Protect the capacitor from excessive dirt, dripping fluids and human interference.

Location ambient temperature is the temperature of the location before capacitors are installed, or with the capacitors installed but not operating (not energized). This is the temperature of the surrounding air in the room, vault, substation or enclosure where the capacitor will be operating. Maximum location ambient temperature should not exceed 46°C (115°F).

The cover on all Calmount® brand capacitors is held on by four (4) side screws, and on larger units, two (2) or more front panel screws.

To remove cover:
1. Take out front panel screws (if present).
2. Loosen side screws.
3. Lift cover off slightly
4. Swing cover free from screws.
5. Lift cover off.


Place Calmount® brand capacitor on cabinet or wall, and mark mounting holes. (Mounting holes are prepunched on all Calmount® brand capacitors.)

The following illustration shows the locations for conduit entry:


Select proper wire size from chart.

Calmount® brand capacitors
Electrical connections to these capacitors are made either to fuse block, fuse lugs, or to a distribution block. Connect a single-phase wire to each terminal. Be sure to attach grounding wire to ground lug for safety.

Multical® brand capacitors
On these units, each capacitor is wired to a separate fuse block.

A two position terminal strip is provided for the remote operation of the contactor. Ensure that the voltage being supplied to the contactor terminals is the same as the contactor coil.

Calmount® brand capacitor
 - KIM Series
On the KIM series capacitors, there are two (2) red lights and one (1) amber light. The two red lights are for indicating blown fuses. The amber light serves two (2) indicating purposes:

  • blown fuse - middle phase (L2)
  • loss of capacitance in a capacitor cell detected by CelTel® brand indicator

Calmount® brand capacitor - KNM Series
On the KNM series capacitors, there are three (3) red indicating lights for indicating blown fuses. If a fuse blows, the fuse light will illuminate. Each fuse light is wired in parallel to its fuse.

MYRON ZUCKER INC. products are designed to:

  • Improve power factor
  • Eliminate utility penalties or surcharges
  • Increase available distribution capacity
  • Mitigate harmonic distortion
  • Protect sensitive equipment
  • Decrease downtime
  • Reduce line losses and associated cost
  • Comply with industry standards


Myron Zucker, Inc.
36825 Metro Court
Sterling Heights, MI 48312
Phone: 586.979.9955
Fax: 586.979.9484
Email: [email protected]