GE TKMA30700
GE TKMA30700 - Image 2

GE TKMA30700

Product Overview: The GE TKMA30700 is a specialized industrial electrical component, typically associated with the GE TK series of molded case circuit breakers and motor protection systems. It functions as a critical internal mechanism, auxiliary contact block, or shunt trip accessory designed to enhance the functionality and safety of GE power distribution equipment.

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Category: SKU: GE TKMA30700

Description

GE TKMA30700 Technical Specifications:

  • Product Line: GE TK Series / Industrial Motor Control
  • Component Type: Auxiliary Switch / Shunt Trip / Internal Mechanism Assembly
  • Voltage Rating: Compatible with standard low-voltage industrial control circuits (up to 600V AC)
  • Current Rating: Rated for control circuit currents (typically 10A-20A for auxiliary contacts)

Functional Features:

  • Status Indication: Provides remote electrical indication of the breaker’s ON/OFF/TRIPPED status.
  • Remote Tripping: Allows for remote disconnection of the circuit in emergency or automated scenarios.
  • Interlocking: Facilitates mechanical or electrical interlocking between multiple breakers or contactors.
  • Precision Fit: Manufactured to exact GE tolerances for seamless integration into TK series breakers.

Application Scenarios:

  • Integration into automated motor control centers (MCCs).
  • Remote monitoring and control in SCADA systems.
  • Safety interlock circuits in heavy industrial machinery.
  • Retrofitting older GE TK breakers with modern communication and control capabilities.

Performance Parameters:

  • Contact Reliability: Gold-plated or silver-plated contacts for low-resistance, reliable signal transmission.
  • Mechanical Endurance: High-cycle mechanical life matching the parent circuit breaker.
  • Response Time: Millisecond-level response for shunt trip activation.

Material Composition & Structural Characteristics:

  • Housing: Flame-retardant, high-dielectric thermoplastic.
  • Internal Contacts: High-conductivity alloys with spring-loaded mechanisms for positive contact pressure.
  • Actuators: Precision-molded mechanical linkages designed for smooth operation.
  • Terminals: Standardized screw or spade terminals for easy field wiring.

Working Principle: When installed as an auxiliary switch, the component mechanically links to the breaker’s operating handle. As the breaker opens or closes, the internal cam rotates, opening or closing the electrical contacts. When used as a shunt trip, applying control voltage to the internal solenoid generates a magnetic force that strikes the breaker’s trip latch, forcing it open.

Installation Requirements:

  • Power Off: Ensure the main circuit breaker is completely de-energized and locked out before installing this component.
  • Mechanical Alignment: Carefully align the component with the breaker’s internal slots or external mounting tabs before securing.
  • Wiring: Connect control wires using appropriate crimped lugs and ensure no stray wire strands are left exposed inside the breaker housing.
  • Functional Test: Manually operate the breaker and verify that the auxiliary contacts change state correctly, or that the shunt trip successfully opens the breaker.

Usage Precautions:

  • Compatibility: Verify that the TKMA30700 is specifically compatible with the exact frame size and catalog number of the parent GE breaker.
  • Control Voltage: Ensure the control voltage applied to a shunt trip matches the coil rating exactly; incorrect voltage will prevent operation or burn out the coil.
  • Handling: Handle with care to avoid damaging the delicate internal mechanical linkages or springs.
  • Professional Installation: Installation should only be performed by qualified electrical personnel familiar with GE TK series equipment.

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