Terminal Blocks, IEC

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Screw Connection Terminal Blocks

Introduction Mini-Blocks Standard Feed-Through Blocks High Current Blocks Space-Saver Feed-Through Blocks Multi-Circuit Feed-Through Blocks Specialty Feed-Through Blocks
Stab-Connect Feed-Through Blocks Sensor Blocks Grounding Blocks Space-Saver Grounding Blocks Isolation Blocks Plug-in Style Terminal Blocks Double Level Plug-in Style Blocks with Ground
Internal Component Blocks Thermocouple Blocks 2-Level Neutral Disconnect and Installation Blocks Single-Circuit Neutral Disconnect Blocks Fuse Blocks Plug-in Connection Blocks Short-Circuit Current Ratings
Fuse Blocks

  1492-H... 1492-WFB4…
Dimensions are not intended to be used for manufacturing purposes.
Note: Height dimension is measured from top of rail to top of terminal block. 		Click to enlarge - 1492-H4 Click to enlarge - 1492-WFB4
Specifications Single-circuit fusible terminal block with or without fuse indication. Single-circuit fuse block with or without fuse indication.
Certifications Click to enlarge - UR Logo CSA IEC Click to enlarge - UR Logo CSA IEC
Voltage Rating H6/WFB4 300V AC/DC 500V AC/DC 300V AC/DC 500V AC/DC
H5/WFB424 10…57V AC/DC 10…57V AC/DC
H4/WFB4250 100…300V AC 85…264V AC
Maximum Current 15 A 15 A 15 A ¬ 
Wire Range (Rated Cross Section) #30…12 AWG 0.5…
4 mm2 		#30…12 AWG 0.5…4 mm2
Wire Strip Length 0.38 in. (9.7 mm) 0.31 in. (8 mm)
Recommended Tightening Torque 7.1 lb•in. (0.8 N•m) 2.65…5.3 lb•in. (0.3…0.6 N•m)
Density   33 pcs/ft (109pcs /m) 38 pcs/ft (125 pcs/m)
Housing Temperature Range –40…+195 °F (–40…+90 °C) –40…+195 °F (–40…+90 °C)
Indicator Type
H6/WFB4 Non-Indicating Non-Indicating
H5/WFB424 Red LED Red LED
H4/WFB4250 Neon Neon
Leakage Current
H6/WFB4 — —
H5/WFB424 2 mA @ 24V 2 mA @ 24V
H4/WFB4250 2 mA @ 300V 2 mA @ 300V
Fuse Size (Not Supplied) 1/4 x 1-1/4 in. 5 x 20 mm
Short-Circuit Current Rating See Fuse Ratings

Terminal Blocks
Cat. No.
Pkg Qty.
Cat. No.
Pkg Qty.
Color: Black No-indication 1492-H6 25 1492-WFB4 50
Black w/LED 1492-H5 25 1492-WFB424 50
Black w/Neon 1492-H4 25 1492-WFB4250 50

Accessories
Cat. No.
Pkg Qty.
Cat. No.
Pkg Qty.
Mounting Rails:
    1 m Symmetrical DIN (Steel) 		199-DR1 10 199-DR1 10
    1 m Symmetrical DIN (Aluminum) 1492-DR5 10 1492-DR5 10
    1 m Hi-Rise Sym. DIN (Aluminum) 1492-DR6 2 1492-DR6 2
    1 m Angled Hi-Rise Sym. DIN (Steel) 1492-DR7 2 1492-DR7 2
3 ft Scored A-B Rail 1492-N1 20 — —
3 ft Rigid A-B Rail 1492-N22 20 — —
3 ft High Rise A-B Rail 1492-N44 2 — —
Standoff Brackets (Use Every 12 in.) 1492-N25 2 — —
End Barrier 1492-N37 50 Not Required —
End Anchors and Retainers:
    Screwless End Retainer 		1492-ERL35 20 1492-ERL35 20
    DIN Rail — Normal Duty 1492-EAJ35 100 1492-EAJ35 100
    DIN Rail — Heavy Duty 1492-EAHJ35 50 1492-EAHJ35 50
    A-B Rail — Heavy Duty 1492-N23 10 — —
Uninsulated 10-Pole Side Jumper 1492-N49 10 1492-SJFB8-10 10
    Side Jumper Insulating Sleeve 1492-SJS 10 — —
Other Accessories:
    Partition Plate 		— — 1492-PPSL3 50
    Group Marking Carrier 1492-GM35 25 1492-GM35 25
Marking Systems:
    Snap-In Marker Card — For Base
    Block 		1492-MS8X12 (56/card) 5 1492-MS8X12 (56/card) 5
1492-MS8X9 (56/card) 5 1492-MS8X9 (56/card) 5
    For Handle 1492-MS8X12 (56/card) 5 1492-MS8X9 (56/card) 5
    Adhesive Labels 1492-ALHFB (50/sheet) 1 1492-ALHFB (50/card) 1
  
¬ IEC standards for 5 x 20 mm fuses do not include ratings above 6.3 A.

Feed-through Hinged Blocks

  1492-JD3FB 1492-JDG3FB
Dimensions are not intended to be used for manufacturing purposes.
Note: Height dimension is measured from top of rail to top of terminal block. 		Click to enlarge - 1492-JD3FB_c_dims Click to enlarge - 1492-JDG3FB_c_dims
Specifications Two-level terminal block with feed-through circuit and hinged-arm fuse circuit Three-Level terminal block with feed-through circuit, hinged-arm fuse circuit, and ground point
Certifications Click to enlarge - UR Logo CSA IEC Click to enlarge - UR Logo CSA IEC
Voltage Rating 300V AC/DC 500V AC/DC 300V AC/DC 500V AC/DC
Maximum Current Fuse Circuit 10 A 10 A/250V 6.3 AT  10 A 10 A/250V 6.3 AT 
Feed-through Circuit 20 A 25 A 20 A 25 A
Wire Range (Rated Cross Section) #22…12 AWG #26…12 AWG 0.5…4 mm2 #22…12 AWG #26…12 AWG 0.5…4 mm2
Fuse Size (Not Supplied) 5 x 20 mm 5 x 20 mm
Wire Strip Length 0.35 in. (9 mm) 0.35 in. (9 mm)
Recommended Tightening Torque 5.5 lb•in. (0.6 N•m) 5.5 lb•in. (0.6 N•m)
Density   38 pcs/ft (125 pcs/m) 38 pcs/ft (125 pcs/m)
Housing Temperature Range –58…+248 °F (–50…+120 °C) –58…+248 °F (–50…+120 °C)
Short-Circuit Current Rating See Fuse Ratings

Terminal Blocks
Cat. No.
Pkg Qty.
Cat. No.
Pkg Qty.
Color: Grey 1492-JD3FB 50 1492-JDG3FB 50

Accessories
Cat. No.
Pkg Qty.
Cat. No.
Pkg Qty.
Mounting Rails:
    1 m Symmetrical DIN (Steel) 		199-DR1 10 199-DR1 10
    1 m Symmetrical DIN (Aluminum) 1492-DR5 10 1492-DR5 10
    1 m Hi-Rise Sym. DIN (Aluminum) 1492-DR6 2 1492-DR6 2
    1 m Angled Hi-Rise Sym. DIN (Steel) 1492-DR7 2 1492-DR7 2
End Barrier Grey 1492-EBJD3FB 20 1492-EBJD3FB 20
End Anchors:
    Screwless End Retainer 		1492-ERL35 20 1492-ERL35 20
    DIN Rail - Normal Duty 1492-EAJ35 100 1492-EAJ35 100
    DIN Rail - Heavy Duty 1492-EAHJ35 50 1492-EAHJ35 50
Jumpers:
    Side Jumper — 4-pole 		1492-SJ8A-4 50 1492-SJ8A-4 50
    Side Jumper — 3-pole 1492-SJ8A-3 50 1492-SJ8A-3 50
    Side Jumper — 2-pole 1492-SJ8A-2 50 1492-SJ8A-2 50
Group Marking
    Rail Mount Group Marking Carrier 		1492-GM35 25 1492-GM35 25
    End Anchor Top Marker Carrier¬  1492-GMC 50 1492-GMC 50
    Cat. No. 1492-GMC Top Marker Tag 1492-M5X30 (20/card) 5 1492-M5X30 (20/card) 5
Marking Systems:
    Snap-in marker cards (Handle) 		1492-M7X12 (108/card) 5 1492-M7X12 (108/card) 5
    Snap-in marker cards (Handle) 1492-MR6X8 (120/card) 5 1492-MR6X8 (120/card) 5
    Snap-in marker cards (Side) 1492-M6X5 (200/card) 5 1492-M6X5 (200/card) 5
  
T  IEC standards for 5 x 20 mm fuses do not include ratings above 6.3 A.
¬  The Bulletin 1492-GMC marker carrier installs directly on the top of a 1492-EAJ35 end anchor or a 1492-ERL35 end retainer for group marking purposes.