2 - NEMA Disconnect Switches€¦ · NEMA 512 CSA Certified (File No. LR 1234) ... 250 1 2 3 —...
Transcript of 2 - NEMA Disconnect Switches€¦ · NEMA 512 CSA Certified (File No. LR 1234) ... 250 1 2 3 —...
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Bulletin 1491
Fuse Blocks2
Bulletin 1491
• Fuse Blocks• Available from
30…600 A• Can be Used with
Class H, J, and R Fuses
TABLE OF CONTENTSDescription Page Description Page
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34Approximate Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
DescriptionThese Bulletin 1491 Fuse Blocks have been designed for general purposeapplications. The bases of these blocks, either phenolic or porcelain, are rugged inconstruction and provide ease in mounting and wiring.
Conformity to Standards: Approvals:NEMA 512 CSA Certified (File No. LR 1234)
UL Listed (File No. E 34648)
30 A Fuse Blockswith Spring-Type Fuse Clips
and Self-Lifting Wiring Terminal Clamps
30 A Fuse Blockswith Spring-Type Fuse ClipsClass R Rejection Feature
and Self-Lifting Wiring Terminal Clamps
60 A Fuse Blockswith Spring-Type Fuse Clipsand Tang-Type Connections
on the Wiring Terminals
100 A Fuse Blockswith Wedge-Type Fuse Clamps
and Tang-Type Connectionson the Wiring Terminals
Bulletin 1491
Fuse Blocks
2-32
Product Selection
Fuse Blocks
➊ These fuse blocks have porcelain bases.➋ For 2-pole applications use two of Cat. No. 1491-N321.➌ For 2-pole applications use two of Cat. No. 1491-N421.➍ For 2-pole applications use two of Cat. No. 1491-N521.➎ For 3-pole applications use three of Cat. No. 1491-N521.➏ For 2-pole applications use two of Cat. No. 1491-N621.➐ For 3-pole applications use three of Cat. No. 1491-N621.➑ For 2-pole applications use two of Cat. No. 1491-R621.➒ For 3-pole applications use three of Cat. No. 1491-R621.
Fuse Size(A)
MaximumVoltage (V)
No. ofPoles
Class CCCat. No.
Class HCat. No.
Class JCat. No.
Class RCat. No.
Class C(HRC Form II)
Cat. No.
0…30
250123
—1491-N1211491-N1221491-N125
———
1491-R125—
600123
—1491-R162
—
1491-N161—
1491-N126
——
1491-N126
——
1491-R126
——
1491-E126
31…60
250 3 — 1491-N226 — 1491-R226 —
600 3 — 1491-N266 1491-N266 1491-R266 1491-E126
61…100 250…600123
—1491-N321 ➊
➋
1491-N333
1491-N321 ➊
➋
1491-N333
——
1491-R333
——
1491-E333
101…200 250…600123
—1491-N421
➌
1491-N433
1491-N421➌
1491-N433
——
1491-R433
——
1491-E433
201…400 250…600123
—1491-N521
➍
➎
1491-N521➍
➎
1491-R523——
1491-E521——
401…600 250…600123
—1491-N621
➏
➐
1491-N621—➐
1491-R621➑
➒
—
Specifications — Page 2-34Approximate Dimensions — Page 2-35
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Bulletin 1491
Fuse BlocksAccessories
Fuse Clip KitsIncludes six clips and mounting hardware
Lugs
➊ All terminals of the 30 A switches are furnished with self-lifting pressure plate connectors as standard.
Fuse ClassFuse Clip Rating (A)
Cat. No.250V 600V
H 30 — 1401-N41H, J 60 30 1401-N42H, J — 60 1401-N43H, J 100 100 1401-N44H, J 200 200 1401-N45H, J 400 400 1401-N46 ➊
R 30 — 1401-N50R 60 30 1401-N51R — 60 1401-N52R 100 100 1401-N53R 200 200 1401-N54R 400 400 1401-N55
Description
For Use withCat. No.
Cat. No.Lug Connectors (3 per package)
DisconnectSize (A)
Wire Size
30 #14…#8 AWG Wire
1491 Fuse Blocks
➊
60 #14…#4 AWG Wire 1494R-N1
100 #8…#1/0 AWG Wire 1494R-N2
200 #6…#4/0 AWG Wire 1494R-N3
400 2 of #1/0…350 MCM Wire 1494R-N10
600 2 of #1/0…350 MCM Wire 1494R-N11
Cat. No. 1494R-N3
Bulletin 1491
Fuse Blocks
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Specifications
Fuse Blocks
ElectricalUL Fuse Type Class C Class CC Class H Class J Class R
CSA Fuse Type HRCI-C HRCI-Misc. HRCI-H HRCI-J HRCI-R
Maximum Fuse Cartridge Size 30…600 A 30 A 30…600 A 30…600 A 30…600 A
Maximum VoltageAC 600V 600V 600V 600V 600V
DC 250V 250V 250V 250V 250V
Thermal Current Rating 30…600 A 30 A 30…600 A 30…600 A 30…600 A
Maximum Short Circuit Prospective FaultCurrent
100 kA 200 kA 10 kA 100 kA 200 kA
MechanicalDegree of Protection IP00 IP00 IP00 IP00 IP00
Terminal Capacitymm2 10 6 10 10 10
AWG #8 (–500 MCM) #10 #8 (–500 MCM) #8 (–500 MCM) #8 (–500 MCM)
ConstructionFuse Clips Tin-plated copper alloy
Terminals Tin-plated copper alloy
Fuse Block Base Phenolic or Porcelain
Environmental
Ambient TemperatureOpen –20…+55°C (–4…+131°F)Enclosed –20…+40°C (–4…+104°F)Storage –40…+65°C (–40…+149°F)
Altitude (per IEC 947-5) 2000m
Relative Humidity (per IEC 947-3) 90% at 20°C and 50% at 40°C
Product Selection — Page 2-32
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Bulletin 1491
Fuse BlocksApproximate Dimensions
Fuse Size 1…30 ADimensions are shown in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.
➊ Alternate mounting holes.➋ Dimension “A” must be held to insure fuse block rejection function.
Note: When fuse blocks are installed in a vertical plane, the block with the rejection numbers must be on the bottom.
Voltage(V)
Class H Class J Fuse Size(A)
MaximumVolts (V)
Cat. No.A ➋
±0.020B
Ref.A B A B
250 2-1/8 (54.0) 3 (76.2) — —1…30
250 1491-R125 2.94 (74.68) 2-1/8 (53.97)
600 2-3/8 (60.3) 5-3/4 (146.1) 2-3/8 (60.3) 3 (76.2) 600 1491-R126 5.72 (145.29) 2-3/8 (60.33)
1…30 A, Single Pole, 600VCat. No. 1491-N161
Shipping Weight — 1 lb (0.45 kg)
1…30 A, 2-Pole, 250VCat. No. 1491-N122
Shipping Weight — 2 lb (0.91 kg)
1…30 A, 3-Pole, 250…600VCat. No. 1491-N125 (250V)Cat. No. 1491-N126 (600V)
Shipping Weight — 1 lb (0.45 kg)
Cat. No. 1491-R162
1…30 A, 250…600VCat. No. 1491-R125 (250V)Cat. No. 1491-R126 (600V)
Shipping Weight — 1 lb (0.45 kg)
Bulletin 1491
Fuse Blocks
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Approximate Dimensions, Continued
Fuse Size 31…60 A
Dimensions are shown in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.
➊ Alternate Mounting Holes.➋ Dimension “A” must be held to insure fuse block rejection function.
Notes:
1. When fuse blocks are installed in a vertical plane, the block with the rejection numbers must be on the bottom.
2. When using Cat. No. 1491-N321, install fiber washers between fuse blocks and mounting plates. Discard extra screws, washers, and clampson multiple pole applications.
Voltage(V)
Class H Class J Fuse Size(A)
MaximumVolts (V) Cat. No. A ➋
±0.020B
Ref.A B A B250 2-3/8 (60.3) 3-3/4 (95.3) — —
31…60250 1491-R226 3.72 (94.49) 2-3/8 (60.33)
600 2-11/16 (68.3) 6-1/4 (158.8) 2-11/16 (68.3) 3-1/8 (79.4) 600 1491-R266 6.22 (157.99) 2-11/16 (68.26)
Voltage (V)Class H Class J
A B A B250 82.6 (3-1/4) 174.6 (6-7/8) — —600 85.7 (3-3/8) 225.4 (8-7/8) 82.6 (3-1/4) 142.9 (5-5/8)
31…600 A, 3-Pole, 250…600VCat. No. 1491-N226 (250V)
Shipping Weight — 1 lb (0.45 kg)
Cat. No. 1491-N266 (600V)Shipping Weight — 2 lb (0.91 kg)
31…60 A, 250…600VCat. No. 1491-R226 (250V)
Shipping Weight — 1 lb (0.45 kg)
Cat. No. 1491-R266 (600V)Shipping Weight — 2 lb (0.91 kg)
Single Pole ApplicationUse One of Cat. No. 1491-N321
Approximate Shipping Weight — 2 lb (0.91 kg)
2-Pole ApplicationUse Two of Cat. No. 1491-N321
Approximate Shipping Weight — Approx. 2 times wt. of 1-Pole
4-Pole ApplicationUse Four of Cat. No. 1491-N321
Approximate Shipping Weight — Approx. 3 times wt. of 1-Pole
3-Pole ApplicationUse Three of Cat. No. 1491-N321
Approximate Shipping Weight — Approx. 3 times wt. of 1-Pole
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Bulletin 1491
Fuse BlocksApproximate Dimensions, Continued
Fuse Size 61…100 ADimensions are shown in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.
➊ Dimension “A” must be held to insure fuse block rejection function.
Notes:
1. When fuse blocks are installed in a vertical plane, the block with the rejection numbers must be on the bottom.
2. Fuse blocks with wedge type clamps (61 A and above) can be oriented to mount all fuses either to the left or to the right of fuse clamp centers.
Voltage (V)Class H Class J
A B A B
250 2-15/16 (74.6) 5-7/8 (149.2) — —
600 3-1/8 (79.4) 7-7/8 (200.0) 3 (76.2) 4-5/8 (117.5)
Fuse Size (A) Maximum Volts (V) Cat. No.A ➊
±0.020B
Ref.
61…100250
1491-R3335.88 (149.35) 2-15/16 (74.61)
600 7.88 (200.15) 3-1/8 (79.38)
3-PoleCat. No. 1491-N333
Approximate Shipping Weight — 3 lb (1.36 kg)
61…100 A, 250…600VCat. No. 1491-R333
Shipping Weight — 3 lb (1.36 kg)
Bulletin 1491
Fuse Blocks
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Approximate Dimensions, Continued
Fuse Size 101…200 ADimensions are shown in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.
➊ Dimension “A” must be held to insure fuse block rejection function.Note: When fuse blocks are installed in a vertical plane, the block with the rejection numbers must be on the bottom.
Voltage (V)Class H or R Class J
A B A B
250 4-3/4 (120.7) 9 (228.6) — —
600 4-61/64 (125.8) 12 (304.80) 4-5/8 (117.5) 7-1/2 (190.5)
101…200 A, 250…600VCat. No. 1491-R433
Shipping Weight — 7 lb (3.2 kg)
Fuse Size(A)
MaximumVolts (V)
Cat. No.A ➊
±0.020B
Ref.
101…200250
1491-R4337.25 (184.15) 4-3/16 (106.36)
600 9.75 (247.60) 4-5/16 (109.54)
Single PoleCat. No. 1491-N521
Shipping Weight — 7 lb (3.2 kg)
2-Pole ApplicationUse Two of Cat. No. 1491-N521Shipping Weight — 6kg (13 lb)
3-Pole ApplicationUse Three of Cat. No. 1491-N521Shipping Weight — 19 lb (8.6 kg)
4-Pole ApplicationUse Four of Cat. No. 1491-N521
Shipping Weight — 25 lb (11.4 kg)
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Bulletin 1491
Fuse BlocksApproximate Dimensions, Continued
Fuse Size 201…400 ADimensions are shown in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.
Fuse Size 401…600 A
➊ Dimension “A” must be held to insure fuse block rejection function.
Notes:
1. When fuse blocks are installed in a vertical plane, the block with the rejection numbers must be on the bottom.
2. Fuse blocks with wedge type clamps (61 A and above) can be oriented to mount all fuses either to the left or to the right of fuse clamp centers.
Fuse Size (A)MaximumVolts (V)
Cat. No.A ➊
±0.020B
Ref.
201…400250
1491-R5239 (228.60) 4-3/4 (120.70)
600 12 (304.80) 4-61/64 (125.81)
Voltage (V)Class H or R Class J
A B A B
250 8-1/8 (206.38) 4-5/8 (117.47) — —
600 11-1/8 (282.57) 7-5/8 (193.68) 6 (127.00) 2-1/2 (63.50)
201…400 A, 250…600VCat. No. 1491-R523
Shipping Weight — 19 lb (8.6 kg)
Single Pole600 A Terminations Only
Cat. No. 1491-N621Shipping Weight — 6 lb (2.7 kg)
Bulletin 1491
Fuse Blocks
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Approximate Dimensions, Continued
Fuse Size 401…600 A, ContinuedDimensions are shown in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.
2-Pole400 A Terminations Only
Cat. No. 1491-N621 (Amt. 2)Shipping Weight — 11 lb (5 kg)
3-Pole400 A Terminations Only
Cat. No. 1491-N621 (Amt. 3)Shipping Weight — 16 lb (7.3 kg)
4-Pole400 A Terminations Only
Cat. No. 1491-N621 (Amt. 4)Shipping Weight — 21 lb (9.5 kg)