| Material     		 | 		Type 		 | 		Model No.        		 | 		Terminals       		 | 		Wt. (oz) 		 | 		Threaded Openings  		 | 		Features     		 | 	
      		Protection Tube Entry  		 | 		Extension Wire Entry  		 |    
			| Cast Iron		 | 		NB1		 | 		NB1-0 NB1-2 NB1-4		 | 		0 = no terminal block 2 = single element 4 = duplex element
  max. 14 gage wire		 | 		22 23 24		 | 		1/2" NPT		 | 		1/2" NPT		 | 		* Rugged construction 		* Screw cover with inside thread 		* Moisture and dust resistant 		* Ideal for outdoor use		 | 	
				Burnished Die Cast Aluminum		 | 		NB2		 | 		NB2-0 NB2-2 NB2-4		 | 		0 = no terminal block 2 = single element 4 = duplex element
  max. 14 gage wire		 | 		5 6 6-1/2		 | 		1/2" NPT Standard		 | 		1/2" NPT w/compression fitting for 1/8" to  1/4"O.D. wire		 | 		* Small and Lightweight 		* Good corrosion resistance 		* Gasketed, weather resistant  		* Burnished finish 		* Safety chain on cover		 | 	
					Cast Aluminum Body and Cap		 | 		NEPA		 | 		NEPA-0 NEPA-2 NEPA-4		 | 		0 = no terminal block 2 = single element 4 = duplex element
  max. 14 gage wire		 | 		16-1/2 17-3/4 18-1/4		 | 		3/4" NPT		 | 		3/4" NPT		 | 		* Explosion resistant head 		* Rated for: Class III  Class I, Group C, D   Class II, Groups E, F, G 		* Screw cover 		* Moisture and dust resistant 		* Safety Ideal for outdoor use 		* Safety Utilizes barrier strip connector (optional)		 | 	
					| NEPB		 | 		NEPB-0 NEPB-2 NEPB-4		 | 		0 = no terminal block 2 = single element 4 = duplex element
  max. 14 gage wire		 | 		21-1/2 22-3/4 23-1/4		 | 		1/2" NPT		 | 		1/2" NPT		 | 	
							Cast Iron		 | 		NSA		 | 		NSA-0 NSA-2 NSA-4		 | 		0 = no terminal block 2 = single element 4 = duplex element
  max. 8 gage wire		 | 		42 46 48		 | 		1/2" NPT		 | 		3/4" NPT		 | 		* Rugged construction 		* Screw cover with inside thread 		* Moisture and dust resistant 		* Ideal for outdoor use 		* Standard trodeks®  heavy duty head 		* Cover equipped with safety  chain (readily removed  without tools)		 | 	
								| NSB		 | 		NSB-0 NSB-2 NSB-4		 | 		0 = no terminal block 2 = single element 4 = duplex element
  max. 8 gage wire		 | 		40 44 46		 | 		3/4" NPT		 | 		3/4" NPT		 | 	
				| NSC		 | 		NSC-0 NSC-2 NSC-4		 | 		0 = no terminal block 2 = single element 4 = duplex element
  max. 8 gage wire		 | 		36 40 42		 | 		1" NPT		 | 		3/4" NPT		 | 	
				Cast Iron with Aluminum Cap		 | 		NEP-T		 | 		NEP-T0 NEP-T2 NEP-T4		 | 		0 = no terminal block 2 = single element 4 = duplex element
  max. 14 gage wire		 | 		75 76 76		 | 		1/2" NPT		 | 		1/2" NPT		 | 		* Explosion resistant head 		* Rated for  Class I, Group C, D  Class II, Groups E, F, G  Class III 		* Screw cover with inside thread 		* Moisture and dust resistant 		* Ideal for outdoor use 		* Utilizes barrier strip  connector (optional)		 | 	
						Feraloy with Iron Alloy		 | 		HEP-TX		 | 		HEP-TX-0 HEP-TX-2 HEP-TX-4 HEP-TX-70		 | 		0 = no terminal block 2 = single element 4 = duplex element 		70 = for mounting TX70 Transmitter 		max. 14 gage wire		 | 		62 64 64 66		 | 		1" NPT 3/4" NPT		 | 		1" NPT 3/4" NPT		 | 		* Explosion resistant head for 2-wire transmitter 		* Rated for  Class I,   Div 1&2, Groups C, D 		   Class III Class II, Div 1 Groups E, F, G, Class III 		* Moisture and dust resistant 		* Ideal for outdoor use 		* Utilizes barrier strip  connector (optional)		 |