---
title: "Solenoid Coil &amp; Plunger"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SOLENOID_COIL_PLUNGER"
  data_integrity_hash: "3b859aeb1264047b81732c36864f2bda"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:SOLENOID_COIL_PLUNGER"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/solenoid-coil-plunger.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/solenoid-coil-plunger"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "12-24 VDC, 0.5-2.0 A, 5-40°C ambient temperature, 0-100% relative humidity (non-condensing)"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 155
    unit: "°C"
    consequence: "Insulation breakdown due to Joule heating (I²R losses) exceeding thermal class rating, magnetic saturation at 1.6-2.2 T flux density, mechanical wear from Lorentz force (F = BIL) exceeding yield strength"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Continuous overvoltage at 150% rated voltage for &gt;30 seconds"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Embedded PTC thermistor with 130°C trip point in coil winding, voltage clamping at 125% rated voltage"
  - node_2:
      trigger: "Plunger mechanical binding due to particulate contamination &gt;25 μm"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "IP67-rated enclosure with 10 μm filtration, plunger guide with 0.01 mm clearance and hardened steel bushings"
bom_nodes:
  coil-bobbin:
    type: "component"
    urn: "URN:CNFX:ME:COIL_BOBBIN"
    interface_type: "physical-logic-coupled"
  coil-winding:
    type: "component"
    urn: "URN:CNFX:ME:COIL_WINDING"
    interface_type: "physical-logic-coupled"
  plunger-core:
    type: "component"
    urn: "URN:CNFX:ME:PLUNGER_CORE"
    interface_type: "physical-logic-coupled"
  return-spring:
    type: "component"
    urn: "URN:CNFX:ME:RETURN_SPRING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/solenoid-coil-plunger.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "4e58eeaf6e9b439b10aad4337f44547e6a81a942746ceddaa7637089a9d8304a"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Solenoid Coil &amp; Plunger

## 1. Technical Definition
An electromagnetic actuator assembly consisting of a wire-wound coil and a movable ferromagnetic plunger, used to convert electrical energy into linear mechanical motion.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **12-24 VDC, 0.5-2.0 A, 5-40°C ambient temperature, 0-100% relative humidity (non-condensing)**. Failure boundary: **Coil temperature exceeding 155°C (Class F insulation limit), plunger force exceeding 50 N, continuous duty cycle &gt;60% at maximum voltage**, Mechanism: **Insulation breakdown due to Joule heating (I²R losses) exceeding thermal class rating, magnetic saturation at 1.6-2.2 T flux density, mechanical wear from Lorentz force (F = BIL) exceeding yield strength**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Continuous overvoltage at 150% rated voltage for &gt;30 seconds | 8 | Coil insulation thermal degradation leading to inter-turn short circuit | Embedded PTC thermistor with 130°C trip point in coil winding, voltage clamping at 125% rated voltage |
| Plunger mechanical binding due to particulate contamination &gt;25 μm | 8 | Increased current draw (200% nominal) and stalled motion | IP67-rated enclosure with 10 μm filtration, plunger guide with 0.01 mm clearance and hardened steel bushings |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Coil Winding Machine**, **Plunger Grinding Machine**, **Assembly Press**  
**Downstream Applications**: Valve Actuators, Locking Mechanisms, Medical Device Components  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What are the primary applications of solenoid coil and plunger assemblies in electrical equipment manufacturing?
**A**: Solenoid coil and plunger assemblies are essential components in industrial valves, relays, actuators, and automation systems where precise linear motion control is required for switching, positioning, or mechanical actuation tasks.

### Q: How does the copper winding in the solenoid coil affect performance?
**A**: Copper winding provides excellent electrical conductivity and thermal efficiency, ensuring optimal electromagnetic force generation, reduced energy loss, and reliable operation under continuous duty cycles in industrial environments.

### Q: What maintenance considerations are important for solenoid coil and plunger assemblies?
**A**: Regular inspection of insulation integrity, checking for plunger wear or sticking, monitoring coil temperature, and ensuring proper spring tension are crucial for maintaining optimal performance and extending service life in electrical equipment.

## 6. Manufacturing Compliance

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Solenoid Coil &amp; Plunger](https://cnfx.com/industry/electrical-equipment-manufacturing/product/solenoid-coil-plunger)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: SOLENOID_COIL_PLUNGER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 540a3975
