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Description
Here’s the technical breakdown for the GE GF868-1-2EX-20A14-0-0-0 industrial switchgear component:
GE GF868-1-2EX-20A14-0-0-0 Technical Specifications
Manufacturer: GE Industrial Solutions (Now part of Eaton)
Product Line: GF Series Hazardous Area Switching Devices
Type: Flameproof (Ex d) Contactor/Relay
Certification: ATEX/IECEx Zone 1/21 (Gas/Dust Explosive Atmospheres)
Hardware Revision: **-0-0-0** (Standard Configuration)
Key Specifications
| Parameter | Value/Details |
|---|---|
| Rated Current | 20A AC-1 (Resistive Load) |
| Voltage Rating | 690V AC / 250V DC |
| Contact Configuration | 1 NO (Normally Open) + 1 NC (Normally Closed) |
| Coil Voltage | 24V DC (Code -1 in P/N) |
| Enclosure Rating | IP66 (Dust/Waterproof) |
| Material | Brass/Stainless Steel (Corrosion-Resistant) |
| Terminal Type | Screw Clamp (Accepts 12-4 AWG) |
| Operating Temp | **-25°C to +70°C** |
| Ambient Temp Class | T4 (≤135°C Surface Temp) |
| Gas Group | IIB (e.g., Ethylene, Propane) |
Configuration Decoding (Part Number Breakdown)
| Code | Meaning |
|---|---|
GF868 |
Base Product (Flameproof Contactor) |
1 |
24V DC Coil |
2EX |
ATEX/IECEx Certified |
20A |
20A Current Rating |
14 |
1NO + 1NC Contact Arrangement |
-0-0-0 |
Default Options (No Auxiliary) |
Typical Applications
- Oil & Gas: Pump control in explosive atmospheres
- Chemical Plants: Solvent handling systems
- Mining: Conveyor motor starters (dusty environments)
- Grain Silos: Dust explosion hazard areas (Zone 21)
Wiring & Installation
Terminal Identification:
- A1/A2: Coil Terminals (24V DC ±10%)
- 13-14: NO Contact
- 21-22: NC Contact
Critical Requirements: - Torque Terminals: 1.2–1.5 N·m
- Use Ex d Cable Glands (e.g., CMP-20G)
- Earth Bonding: Mandatory (M8 ground terminal)
Safety & Compliance
| Standard | Certification |
|---|---|
| ATEX | II 2 G Ex db IIC T4 Gb |
| IECEx | Ex db IIC T4 Gb |
| IEC/EN 60079-0 | Explosive Atmospheres |
| IEC/EN 60947-4-1 | Low-Voltage Switchgear |
Obsolescence & Replacement
⚠️ Status: Discontinued (EoL 2020)
Direct Replacement:
- Eaton GF868A Series (GF868A-1-2EX-20A14-0-0-0)
Cross-References:
| Manufacturer | Equivalent Model |
|——————|————————————|
| ABB | AFL-12/20 (2NO+2NC variant) |
| Sprecher+Schuh | CA2-EN-2EX-20A |
| R. STAHL | 8136/2-24V |
Ordering & Maintenance
- Lead Time: 12–16 weeks (refurbished units via Eaton Legacy)
- Spare Contacts: Kit GF-AC-KIT1 (NO/NC contact blocks)
- Certification Docs: Request ExTR 20.0056X (IECEx)
Critical Notes
- Gas Group Limitation:
- Not suitable for Hydrogen (IIC) → Use GF868-1-2EX-32C14 for IIC
- Coil Voltage Tolerance:
- Ensure 24V DC ±10% (21.6–26.4V) to prevent chatter
- Arc Flash Protection:
- Always use with Ex d-certified fuse (e.g., Eaton Bussmann LPJ-20SP)
- Retrofitting:
- New GF868A models require updated gland threads (M25x1.5 vs. legacy M20)
🔧 Pro Tip: For dusty environments (Zone 21), apply silicon grease (Eaton #GR-005) to threaded joints annually. Verify surface temperature annually with IR gun (max 135°C at 20A full load).
Documentation:
- Manual: GEK-109869 (GF Series Installation)
- IECEx Certificate: IECEx UL 20.0056X
Legacy Support: Contact Eaton’s Hazardous Area Solutions Team for migration to Crouse-Hinds Series HD or Ex d modernization kits.
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