---
title: "Alarm Output Relay"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ALARM_OUTPUT_RELAY"
  data_integrity_hash: "b377b9f7c5b877c06c3c129b55ef7401"
  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:ALARM_OUTPUT_RELAY"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/alarm-output-relay.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/alarm-output-relay"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "24-240 VDC, 12-240 VAC, 0.5-10 A contact rating, -40°C to +85°C ambient temperature"
    unit: "A"
engineering_limits:
  max_safe_operating_point:
    value: 100
    unit: "m"
    consequence: "Electromagnetic coil demagnetization at Curie temperature (770°C for iron core), contact welding due to Joule heating (I²R) exceeding 10⁶ J/m³, dielectric breakdown at 3×10⁶ V/m for air gap insulation"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Coil insulation degradation from partial discharge at 500 pC discharge magnitude"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Vacuum impregnation with Class H insulation varnish (180°C thermal rating)"
  - node_2:
      trigger: "Contact bounce-induced arcing exceeding 10⁴ A/m² current density"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "AgSnO₂ contact material with 0.5 mm arc chute spacing and 100 m/s contact separation velocity"
bom_nodes:
  coil:
    type: "part"
    urn: "URN:CNFX:ME:COIL"
    interface_type: "physical-logic-coupled"
  armature:
    type: "component"
    urn: "URN:CNFX:ME:ARMATURE"
    interface_type: "physical-logic-coupled"
  contacts:
    type: "component"
    urn: "URN:CNFX:ME:CONTACTS"
    interface_type: "physical-logic-coupled"
  spring:
    type: "component"
    urn: "URN:CNFX:ME:SPRING"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 13849-1:2015 (SAFETY OF MACHINERY - SAFETY-RELATED PARTS OF CONTROL SYSTEMS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ISA-18.1-1979 (R2018) (ANNUNCIATOR SEQUENCES AND SPECIFICATIONS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 60947-5-1:2017 (LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - CONTROL CIRCUIT DEVICES AND SWITCHING ELEMENTS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/alarm-output-relay.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "7384942558e569e66da25e3069c6aa2a1a754db706b6e84bf485a8d60902ab8f"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Alarm Output Relay

## 1. Technical Definition
An electrical relay that activates external alarm devices or systems when triggered by safety monitoring signals.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **24-240 VDC, 12-240 VAC, 0.5-10 A contact rating, -40°C to +85°C ambient temperature**. Failure boundary: **Contact resistance exceeding 100 mΩ, insulation breakdown at 1500 VAC for 1 minute, coil burnout at 130% rated voltage for 60 seconds**, Mechanism: **Electromagnetic coil demagnetization at Curie temperature (770°C for iron core), contact welding due to Joule heating (I²R) exceeding 10⁶ J/m³, dielectric breakdown at 3×10⁶ V/m for air gap insulation**.

### 2.1 Analytical Physics Model
Governed by the **Joule Heating & Thermal Resistance**:

> **Primary Equation**: $P = I^2 R = \frac{V^2}{R}$  
> **Engineering Impact**: Governs heating element sizing for shrink tunnels/sealers.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| I | Current | Engineering Constant |
| R | Resistance | Engineering Constant |
| V | Voltage | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Coil insulation degradation from partial discharge at 500 pC discharge magnitude | 8 | Coil-to-frame short circuit causing relay non-activation | Vacuum impregnation with Class H insulation varnish (180°C thermal rating) |
| Contact bounce-induced arcing exceeding 10⁴ A/m² current density | 8 | Contact welding in normally open position preventing alarm deactivation | AgSnO₂ contact material with 0.5 mm arc chute spacing and 100 m/s contact separation velocity |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Coil](https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/coil.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Test and Calibration Equipment**, **Automated Assembly Line**, **Environmental Test Chamber**  
**Downstream Applications**: Fire Alarm Control Panels, Building Management Systems, Industrial Safety Systems  

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

### Q: What is the primary function of an alarm output relay?
**A**: An alarm output relay activates external alarm devices or systems when triggered by safety monitoring signals, providing a reliable interface between monitoring equipment and alarm indicators.

### Q: What materials are used in the construction of this relay?
**A**: This alarm output relay is constructed using durable materials including copper for conductive components, steel for structural parts, and plastic for the housing and insulation.

### Q: What are the key components in the relay's bill of materials (BOM)?
**A**: The main components include the coil (electromagnet), armature (moving part), contacts (switching elements), spring (return mechanism), and housing (protective enclosure).

## 6. Manufacturing Compliance
- ISO 13849-1:2015 (SAFETY OF MACHINERY - SAFETY-RELATED PARTS OF CONTROL SYSTEMS)
- ANSI/ISA-18.1-1979 (R2018) (ANNUNCIATOR SEQUENCES AND SPECIFICATIONS)
- DIN EN 60947-5-1:2017 (LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - CONTROL CIRCUIT DEVICES AND SWITCHING ELEMENTS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Alarm Output Relay](https://cnfx.com/industry/electrical-equipment-manufacturing/product/alarm-output-relay)**

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

> **Reference ID**: ALARM_OUTPUT_RELAY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: b9b8b1a9
