INDUSTRY COMPONENT

Coil

A coil is an electromagnetic component that converts electrical energy into magnetic force, used in trip solenoids for actuation.

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Component Specifications

Definition
A coil is an electrical conductor wound into a series of loops or turns, designed to generate a magnetic field when an electric current passes through it. In industrial applications, such as trip solenoids, it serves as the core electromagnetic actuator that produces linear or rotary motion by attracting or repelling a ferromagnetic plunger or armature, enabling mechanical switching or control functions in machinery.
Working Principle
The coil operates on the principle of electromagnetism: when an electric current flows through the coiled conductor, it generates a magnetic field proportional to the current and number of turns. This magnetic field interacts with a movable ferromagnetic core (e.g., in a trip solenoid), creating a force that moves the core to perform work, such as tripping a mechanism or actuating a valve.
Materials
Typically made from copper or aluminum wire with enamel or polymer insulation, wound around a bobbin of thermoplastic (e.g., nylon, PBT) or thermoset material. The core may include ferromagnetic materials like iron or steel for enhanced magnetic flux.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Inductance10-500 mH
Resistance5-100 Ohms
Wire GaugeAWG 18-30
Insulation ClassClass B (130°C) or higher
Operating Voltage12-240 V DC/AC
Temperature Range-40°C to 150°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 9001, IEC 60085, DIN EN 60317

Parent Products

This component is used in the following industrial products

Trip Solenoid

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

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Solenoid Valve Bank

A centralized assembly of multiple solenoid valves used to control fluid flow in a pressure testing system.

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Relay/Switch

An electromechanical or solid-state device that opens or closes electrical circuits to control the flow of current within a control unit or thermostat.

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Engineering Analysis

Risks & Mitigation
  • Overheating due to excessive current
  • Insulation breakdown from voltage spikes
  • Mechanical wear from repeated actuation
FMEA Triads
Trigger: Overcurrent or poor heat dissipation
Failure: Coil burnout or insulation failure
Mitigation: Implement current limiting, use thermal protection devices, and ensure adequate ventilation.
Trigger: Moisture ingress or chemical exposure
Failure: Corrosion or short circuits
Mitigation: Apply conformal coatings, use sealed enclosures, and select corrosion-resistant materials.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±5% on electrical resistance, ±10% on inductance
Test Method
Electrical testing per IEC 60085, thermal cycling per ISO 16750, and mechanical endurance testing.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Coil

Manufacturer profiles associated with Coil.

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Frequently Asked Questions

What is the primary function of a coil in a trip solenoid?

The coil generates a magnetic field to actuate the solenoid's plunger, enabling mechanical tripping or switching actions in industrial equipment.

How do material choices affect coil performance?

Copper wire offers high conductivity and efficiency, while insulation materials determine thermal and electrical durability; core materials influence magnetic strength and response time.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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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