Structured Manufacturing Data (2026)

Trip Solenoid

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Trip Solenoid used in the Electrical Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Trip Solenoid is characterized by the integration of Coil and Plunger/Armature. In industrial production environments, manufacturers listed on CNFX commonly emphasize Copper wire (coil) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Electromagnetic actuator that triggers circuit breaker disconnection when abnormal conditions are detected.

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Product Specifications

Technical details and manufacturing context for Trip Solenoid

Definition
A trip solenoid is an electromagnetic component within a circuit breaker trip unit that converts electrical signals into mechanical force to initiate the breaker's disconnection mechanism. It serves as the primary actuator that physically releases the latch or triggers the mechanism that opens the circuit when overcurrent, short circuit, or other fault conditions are detected by the trip unit's sensing elements.
Working Principle
When the trip unit detects a fault condition (overcurrent, short circuit, etc.), it sends an electrical signal to the trip solenoid coil. This energizes the coil, creating a magnetic field that attracts a plunger or armature. The resulting mechanical movement either directly releases the circuit breaker's latch mechanism or activates a secondary mechanism that causes the breaker contacts to open, thereby interrupting the electrical circuit.
Common Materials
Copper wire (coil), Electrical steel (core), Plastic (bobbin/housing), Spring steel (return spring)
Technical Parameters
  • Plunger stroke length and diameter (mm) Customizable
Components / BOM
  • Coil Part
    Generates electromagnetic field when energized
  • Plunger/Armature Part
    Moves under magnetic force to trigger mechanical release
  • Bobbin Part
    Supports and insulates the coil windings
  • Core Part
    Concentrates and directs magnetic flux
  • Return Spring Part
    Returns plunger to resting position when de-energized

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Trip Solenoid.

circuit breaker trip solenoid replacement electromagnetic actuator for electrical protection copper coil trip solenoid specifications industrial circuit breaker safety components high voltage trip solenoid installation

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Circuit Breaker Trip Unit
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar
other spec: Coil voltage tolerance: ±10% of rated voltage
temperature: -40°C to +85°C
Media Compatibility
✓ Dry air ✓ Inert gases (N2, Argon) ✓ Oil-free hydraulic fluids
Unsuitable: Corrosive or conductive fluids (e.g., saltwater, acids)
Sizing Data Required
  • Required holding force (N)
  • Supply voltage and frequency (V/Hz)
  • Response time requirement (ms)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Coil Burnout
Cause: Overvoltage, excessive duty cycles, or poor electrical connections leading to overheating and insulation breakdown.
Mechanical Binding/Sticking
Cause: Contamination (dirt, debris), corrosion, lack of lubrication, or physical damage preventing proper plunger movement.
Maintenance Indicators
  • Audible buzzing or humming from the solenoid when energized, indicating improper seating or electrical issues.
  • Visible signs of overheating such as discoloration, melting, or charring on the solenoid housing or wiring.
Engineering Tips
  • Implement regular cleaning and inspection schedules to prevent contamination buildup and ensure free mechanical movement.
  • Monitor and maintain proper voltage supply and electrical connections to prevent overvoltage conditions and ensure reliable operation.

Compliance & Manufacturing Standards

Reference Standards
ISO 4401: Hydraulic fluid power - Four-port directional control valves - Mounting surfaces ANSI/B93.5: Hydraulic fluid power - Solenoid-operated directional control valves CE Marking: Directive 2006/42/EC on machinery safety
Manufacturing Precision
  • Bore diameter: +/-0.02mm
  • Surface flatness: 0.1mm across mating surface
Quality Inspection
  • Dye penetrant test for surface defects
  • Pressure decay test for internal leakage

Factories Producing Trip Solenoid

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of a trip solenoid in electrical equipment?

A trip solenoid serves as an electromagnetic actuator that automatically triggers circuit breaker disconnection when abnormal electrical conditions like overloads or short circuits are detected, preventing equipment damage and ensuring safety.

What materials are used in trip solenoid construction and why?

Trip solenoids typically use copper wire for efficient coil winding, electrical steel for the magnetic core to minimize energy loss, plastic for bobbin/housing insulation, and spring steel for the return spring to ensure reliable reset after activation.

How do I select the right trip solenoid for my circuit breaker application?

Consider voltage rating, current capacity, response time, mounting compatibility, and environmental conditions. Consult manufacturer specifications and ensure the solenoid matches your circuit breaker's trip mechanism requirements for optimal protection.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Electrical Equipment Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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