Eaton Crouse-Hinds BHR and SRD Explosionproof Interlocked Receptacles

Key Features

• Certifications:
  • BHR: Class I, Div. 1 & 2, Groups B, C, D; Class II, Div. 1 & 2, Groups F, G; Class III; NEMA 3R, 7BCD, 9FG.
  • SRD: Class I, Div. 1 & 2, Groups C, D; Class II, Div. 1 & 2, Groups F, G; Class III; NEMA 3R, 7CD, 9FG (no Group B).
• Ratings: 30A, 60A, 100A; 600 VAC max, 250 VDC max.
• Interlock: Rotary switch operates automatically via plug insertion/removal; contacts engage before the switch closes and disengage after it opens, isolating arcing in a flame-tight chamber.
• Operation: Plug fastening ring unscrews for straight-pull disconnection; no external handle required.
• Materials: Copper-free aluminum housing, brass contacts.
• Plugs: Compatible with Arktite BHP (BHR) and SP (SRD) plugs, featuring pressure terminations.
• Wiring: Receptacles have flexible leads for splicing; large threaded cover provides access.

Applications

• BHR: Refineries, chemical plants with hydrogen (Group B) or equivalent hazards.
• SRD: Petroleum facilities, grain processing plants with flammable gases (Groups C, D) or dusts (Groups F, G).

Catalog Numbers and Specifications Table

Based on Eaton’s latest data (not from your EPC/EPCB document), here’s a table of common BHR and SRD configurations:

*Notes:

• Cat. # Breakdown: E.g., BHR3323 = 30A, 2W3P, Style 2, 1″ hub. SRD643 = 60A, 3W4P, 1-1/4″ hub.
• Hubs: BHR offers top, bottom, or through-feed (3/4″ to 2″); SRD uses fixed 1-1/4″ vertical through-feed back box.
• Plugs: BHP (brass contacts) for BHR; SP (with cable grip, neoprene bushing) for SRD.*

Back Boxes for BHR and SRD

• BHR: Does not use separate back boxes; conduit hubs (3/4″ to 2″) are integral to the assembly for top, bottom, or through-feed setups.
• SRD: Includes a factory-provided back box with 1-1/4″ vertical through-feed hubs. Optional separate back boxes (e.g., AJC108) can adapt to other conduit layouts.

Comparison to EPC/EPCB