BOLTED PRESSURE CONTACT SWITCHES

Bolted Pressure Contact Switches are Designed by Filnor for:

  • Ease of Operation
  • Low Maintenance
  • Dependability
  • Safety
  • Economical Price

WHAT IS A TYPE BM BOLTED PRESSURE SWITCH?

The Filnor Type BM is an open style switch utilizing the proven Filnor Inc. bolted pressure contact switch.

The switch is an open style switch consisting of two parallel, movable blades with stationary contacts at each end.
A bolt passes through the blades, hinge and clip stationary contacts and a fixed clamping nut.
Pressure is applied on the contacts rotating the clip and hinge bolts, connected together by a linkage assembly, effectively tightening the joint.
The result is a joint current carrying capacity similar to bolted buss bar.

APPLICATIONS

Filnor BM Bolted Pressure Contact Switches are designed for non-load break applications. Typical application is for circuit isolation in many types of systems, including industrial motor controls, AC/DC distributions panels, and power distribution for transit systems.

APPLICATIONS INCLUDE:
  • Crane Rail Isolation
  • Rectifier Disconnect Switches
  • Battery Disconnects
  • UPS Systems
  • Transit Third Rail Disconnects
  • Transfer Switches
  • AC/DC Switchboards
  • Contact Rail Switches
  • Trolley-line Disconnect Switches
  • Motor Control Isolation Switches
  • DC Substation Switches
  • And Other Applications

DESIGN CRITERIA & TESTING

Individual units are factory tested prior to shipment for:
– Dialetric withstand
– Contact resistance
– Dimensional outline
– Build configuration
A copy of the factory test report is included with each switch.
Switches are designed and tested in strict accordance with the following standards as applicable, UL, CUI, Nema, ANSI, IEEE.
Each switch unit is date coded on a label for tracing purposes.
Applicable warning signs applied.

DESIGN FEATURES

  • Engineered to ensure reliability, safety, ease of operation, and low maintenance.
  • Switch current carrying materials are ETP 110 Copper Bar.
  • Terminals and contact surfaces are silver plated ensuring low contact resistance not affected by oxidation.
  • Current density designed for 1k amperes per square inch minimum.
  • Switch design for current flow straight through the switch to reduce overload stresses.
  • Terminals with standard NEMA hole patterns.
  • GPO-3 insulating base.

STANDARD SWITCH RATINGS

  • Continuous Current Ratings (Amperes): 800,1200, 1600, 2000, 2500, 3000, 4000, 8000, 10,000, 12,000*
  • Fault Current Rating: 160 kA DC @ 100 ms
  • Voltage Rating: 1000 V AC or DC
  • Test Withstand Voltage: 4250 V rms 60 sec

* 40 degrees C ambient with 60 degrees C rise.

BENEFITS INCLUDE:

  • Clean Compact Design
  • Rugged Construction
  • Proven Performance
  • High Current Capacity
  • Large Isolation Air Gap and Creepage Paths
  • Standard NEMA Drilling on Terminal Paths
  • Extensive Options List to adapt Switch to the Application

AVAILABLE SWITCH CONFIGURATIONS

  • Single Throw
  • Double Throw
  • 1 thru 4 Poles
  • Handle Operated
  • Hook Stick Operated
  • Motor Operated
  • Pole Mounted

Examples of Our Products:

  • BM 2010-2P-2X-K3 Rectifier Disconnect Switch
    • 2000 A, 1000 V
    • 2-Pole
    • 2 NO, 2 NC
    • Auxiliary Contact Provision for Key Interlock in the open and closed position
  • Type BPI Switch Crane Rail Disconnect
    • 3000 A, 250 V DC
    • 2 - Pole
    • Single Throw
    • Fusible
  • Contact Rail Disconnect Switch
    • 1200 A
    • 1000 V DC
    • 1 - Pole
    • Single Throw
    • Non-Fusible
  • Special Design Transit Switch
    • 6000 A
    • 1000 V DC
    • 1-Pole
    • Single Throw
    • Motor Operated with Auxiliary Contacts
  • Special Design Type BM
    • 2000 A
    • 1000 V
    • 2-Pole
    • Double Throw
  • Ordering Information Required for Custom Assemblies:
    • Submit your application to our engineering department, along with the specifications, and we will gladly respond with a practical and economical solution to fit your needs.

SWITCH OPERATOR

The TYPE BM switch utilizes a straight type handle, or hook stick eye, attached through an insulator to the hinge actuator assembly to manually open and close the switch. Insulating material and a shield are provided to prevent contact with electrically live components. The switch is not to be operated under loaded conditions.

TERMINAL ARRANGEMENTS

The TYPE BM switch terminals are drilled to NEMA standards.

SWITCH STOP AND PADLOCK ATTACHMENT

The TYPE BM switch is provided with a rugged positive stop in the open position. Provisions for padlocking the switch in the open and closed positions are provided.

SWITCH ENCLOSURES

Enclosures for the TYPE BM switch are to be designed for vertical switch mounting. Switch supporting structure must be flat and parallel where the switch is mounted.

METHOD OF OPERATION

Manual, motor operated, pneumatic, remote.

AVAILABLE OPTIONS

  • Cable connectors
  • Auxiliary contacts
  • Key interlock provisions
  • Key interlocks
  • Hook stick operator
  • Fusible
  • Motor operated
  • Front operated handle assembly (for operating outside enclosure)
  • Higher currents and voltages
  • Special designs application

CONFIGURATION

  • 1 through 4 poles
  • Single or Double throw
  • Non-fusible or fusible

MECHANICAL

  • Open panel mounting
  • Enclosed: NEMA 1, 12, 3R, 4, 4X
  • Material: powder coated steel, stainless steel, aluminum, fiberglass
  • Door interlocking
  • Padlocking
  • Silver plated terminal connections
  • Top entry, bottom exit
  • Top entry and exit
  • Bottom entry and exit

ELECTRICAL

  • 600 through 12,000 amperes continuous standard – higher currents available
  • 160 kA DC momentary
  • 200 kA AC momentary
  • Rated voltage: 250 V through 38 kV
FILNOR COMMON BM STYLE SWITCHES
1000 Volt DC 1000 Volt AC
AMP1 Pole2 Pole3 Pole
800BM-08-10-1PBM-08-10-2PBM-08-10-3P
1200BM-12-10-1PBM-12-10-2PBM-12-10-3P
1600BM-16-10-1PBM-16-10-2PBM-16-10-3P
2000BM-20-10-1PBM-20-10-2PBM-20-10-3P
2500BM-25-10-1PBM-25-10-2PBM-25-10-3P
3000BM-30-10-1PBM-30-10-2PBM-30-10-3P
4000BM-40-10-1PBM-40-10-2PBM-40-10-3P
5000BM-50-10-1PBM-50-10-2PBM-50-10-3P
6000BM-60-10-1PBM-60-10-2PBM-60-10-3P
8000BM-80-10-1P
10,000BM-100-10-1P
12,000BM-120-10-1P