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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