Structured Manufacturing Data (2026)

Actuator/Solenoid

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Actuator/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 Actuator/Solenoid is characterized by the integration of Solenoid Coil and Plunger/Armature. In industrial production environments, manufacturers listed on CNFX commonly emphasize Copper (coil winding) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Electromechanical device that converts electrical signals into mechanical motion within a trip unit.

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Product Specifications

Technical details and manufacturing context for Actuator/Solenoid

Definition
An actuator/solenoid in a trip unit is a critical component responsible for initiating the mechanical tripping action when an electrical fault is detected. It receives signals from the trip unit's sensing circuitry and generates the precise mechanical force needed to open the circuit breaker contacts, thereby interrupting current flow and protecting the electrical system.
Working Principle
When the trip unit detects an overcurrent, short circuit, or other fault condition, it sends an electrical signal to the solenoid coil. This energizes the coil, creating a magnetic field that pulls a plunger or armature. This linear mechanical motion is then transferred through a linkage mechanism to release the latch holding the circuit breaker contacts closed, causing them to open and interrupt the circuit.
Common Materials
Copper (coil winding), Electrical steel (core), Plastic (bobbin/housing), Spring steel (return spring)
Technical Parameters
  • Stroke length of the plunger/armature movement (mm) Per Request
Components / BOM
  • Solenoid Coil
    Converts electrical energy into magnetic field when energized
    Material: Copper wire, electrical steel core, plastic bobbin
  • Plunger/Armature Part
    Moves linearly within the magnetic field to generate mechanical force
    Material: Magnetic steel or soft iron
  • Return Spring Part
    Returns the plunger to its resting position when coil is de-energized
    Material: Spring steel
  • Housing Part
    Provides structural support and protects internal components
    Material: Thermoplastic or thermoset plastic

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Actuator/Solenoid.

industrial solenoid actuator for trip units electromechanical actuator electrical equipment copper coil solenoid manufacturing spring return actuator for electrical systems precision solenoid for trip unit motion

Applied To / Applications

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

Trip Unit
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Dosing Pump/Valve
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Transfer Switch
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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: Operating voltage: 12-24 VDC, Duty cycle: 100% continuous, Response time: <50 ms
temperature: -40°C to +85°C
Media Compatibility
✓ Hydraulic oil (ISO VG 32-68) ✓ Compressed air (dry, filtered) ✓ Water/glycol mixtures
Unsuitable: Corrosive chemicals or abrasive slurries
Sizing Data Required
  • Required force/stroke (N/mm)
  • Operating voltage/current (VDC/A)
  • Mounting configuration/space constraints

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Coil Burnout
Cause: Overvoltage, excessive duty cycle, or poor heat dissipation leading to insulation breakdown and open circuit
Spool Valve Sticking
Cause: Contamination ingress (particles, moisture) or wear debris accumulation causing mechanical binding and erratic operation
Maintenance Indicators
  • Audible buzzing or humming during operation indicating coil issues or armature misalignment
  • Visible external leakage of hydraulic fluid or compressed air at seals/connections
Engineering Tips
  • Implement proper filtration (5-10 micron) in fluid systems and use protective boots on rod-style actuators to prevent contamination ingress
  • Install voltage monitoring with surge protection and ensure adequate cooling/ventilation to prevent thermal degradation of electrical components

Compliance & Manufacturing Standards

Reference Standards
ISO 4401: Hydraulic fluid power - Four-port directional control valves - Mounting surfaces ANSI/B93.5M: Hydraulic fluid power - Solenoid-operated directional control valves DIN EN 175301-803: Detail specification - Connectors, electrical, rectangular, with screw-locking, for industrial environments
Manufacturing Precision
  • Bore diameter: +/-0.01mm
  • Mounting surface flatness: 0.05mm
Quality Inspection
  • Pressure decay leak test
  • Electrical insulation resistance test

Factories Producing Actuator/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 this actuator/solenoid in electrical equipment?

This electromechanical device converts electrical control signals into precise mechanical motion within trip units, enabling reliable switching and protection functions in electrical systems.

What materials ensure durability in this solenoid actuator?

The actuator features copper coil windings for efficient conductivity, electrical steel cores for magnetic performance, plastic bobbins/housings for insulation, and spring steel return springs for consistent mechanical operation.

How does the return spring contribute to the actuator's operation?

The spring steel return spring provides reliable resetting of the plunger/armature after actuation, ensuring consistent mechanical motion and extending the device's operational lifespan in repetitive cycling applications.

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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