INDUSTRY COMPONENT

Solenoid Coil

Electromagnetic coil converting electrical energy to mechanical motion in solenoid valves

Component Specifications

Definition
A solenoid coil is an electromechanical component consisting of insulated copper wire wound around a bobbin or core, designed to generate a controlled magnetic field when energized by electrical current. In control solenoid valves, this magnetic field actuates the valve mechanism to regulate fluid flow in industrial systems.
Working Principle
When electrical current flows through the coil windings, it generates a magnetic field according to Ampere's law. This magnetic field attracts or repels a ferromagnetic plunger or armature, converting electrical energy into linear mechanical motion to open or close valve ports.
Materials
Copper magnet wire (typically 18-24 AWG, Class F or H insulation), epoxy-impregnated bobbin (PBT or nylon), protective housing (stainless steel or aluminum), electrical terminals (brass or copper alloy)
Technical Parameters
ParameterTypical rangeNotes & selection driver
IP RatingIP65 or higher for industrial environments
Duty CycleContinuous or intermittent
Inductance10mH-2H
Resistance10-500 ohms
Voltage Rating12V DC, 24V DC, 110V AC, 220V AC
Insulation ClassClass F (155°C) or Class H (180°C)
Power Consumption5-50W
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 4401, DIN 24340, IEC 60034, UL 508

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Overheating leading to insulation failure
  • Moisture ingress causing short circuits
  • Voltage spikes damaging windings
  • Mechanical stress on lead wires
  • Chemical corrosion of housing
FMEA Triads
Trigger: Continuous operation above rated temperature
Failure: Insulation degradation and eventual short circuit
Mitigation: Install thermal protection devices, ensure adequate cooling, monitor operating temperature
Trigger: Moisture ingress in humid environments
Failure: Corrosion and electrical leakage between windings
Mitigation: Use IP67 or higher rated enclosures, apply conformal coating, implement proper sealing
Trigger: Voltage transients from industrial power systems
Failure: Insulation breakdown and coil burnout
Mitigation: Install surge protection devices, use voltage regulation, implement proper grounding

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±10% resistance, ±15% inductance, ±5% dimensions
Test Method
Hi-pot test (1500V AC for 1 minute), insulation resistance test (≥100MΩ at 500V DC), functional test with specified voltage, temperature rise test under rated load

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 Solenoid Coil

Manufacturer profiles associated with Solenoid Coil.

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Frequently Asked Questions

What causes solenoid coil failure in industrial applications?

Common causes include overheating from excessive current or ambient temperature, insulation breakdown from moisture or chemical exposure, mechanical damage to windings, and voltage spikes damaging the coil insulation.

How do I select the correct solenoid coil for my control valve?

Match voltage type (AC/DC) and rating, verify electrical characteristics (resistance, inductance), ensure proper enclosure rating for the environment, confirm temperature class matches operating conditions, and verify mechanical compatibility with valve body.

Can solenoid coils be repaired or must they be replaced?

While rewinding is technically possible for some industrial coils, replacement is generally recommended due to specialized winding equipment requirements, potential hidden damage, and the critical nature of reliable operation in industrial systems.

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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