The EIH20 is an Eaton Crouse-Hinds Series explosionproof instrument enclosure. First, it houses small field instruments. Then it withstands hazardous atmospheres found in petrochemical, marine, and heavy industrial sites. As a result, technicians use it to enclose 2-wire transmitters, switches, and temperature/pressure devices.
Importantly, the EIH20 is an instrument enclosure from Crouse-Hinds, not a Wheelock fire-alarm notification accessory. Specifically, the brand association on some catalogs reflects a distribution taxonomy artifact, not the product’s actual lineage.
Verified construction
- Material: copper-free aluminum (reduces galvanic corrosion in marine and chemical settings).
- Cover: standard, 2″ cover opening.
- Trade size: 3/4″ conduit hub.
- Approximate dimensions: 5.25″ L x 4.54″ H x 5.25″ W.
- Weight: roughly 2.8 lb.
Hazardous location ratings
- Class I, Division 1 and Division 2.
- Class II, Division 1 and Division 2.
- Class III.
As a result, the EIH20 covers explosive gas, combustible dust, and ignitable fiber atmospheres.
NEMA ratings
Per the Crouse-Hinds catalog, the enclosure carries NEMA 3, 4, 4X, 7B/7C/7D, and 9E/9F/9G ratings. Therefore, it suits wet, corrosive, and explosionproof installations.
Agency listings
- Listed to UL 1203 (explosion-proof and dust-ignition-proof electrical equipment for hazardous locations).
- CSA C22.2 equivalent certification.
Typical use
First, the installer terminates a 2-wire instrument cable through the 3/4″ conduit hub. Then the field instrument mounts inside the enclosure and connects through the 2″ cover opening. Finally, the cover threads on, sealing the enclosure to its hazardous-location rating.
Important clarification
The EIH20 is not specified by Eaton as a backbox for Wheelock fire-alarm horns or strobes. Therefore, do not substitute it for a UL-listed weatherproof or hazardous-location appliance backbox without consulting the appliance’s installation instructions.
Authoritative sources: Eaton EIH20 product page; Eaton Crouse-Hinds enclosures catalog.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 3.2 lbs |
|---|---|
| Dimensions | 7.5 × 6 × 5.5 in |
| Condition | New |
| Manufacturers | Wheelock |
| Part Type | Strobe |
