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Siba Home >> Products >> Siba >> UR Fuses & Bases >> URS Fuses  
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 URS Fuses
 
Classes: aR
Voltage ratings: AC700 V /AC1300 V
Current ratings: 50 to 3000 A
Sizes: 1, 2, 3 and 4
Approvals: 
Standards:DIN 43653
                  DIN VDE 0636-40
                  IEC 60269-4
                  UL 248-13

SIBA square body fuses type SQB are available in four different body sizes. Each size is available in various mounting styles for global applications. Variety in body
sizes, mounting style and amp ratings allow maximum flexibility in equipment design.

SIBA SQB fuses provide superior engineering for the protection of today’s power semiconductors. The silicated process, together with special shape and form of the
pure silver melting elements, give excellent results of low I2t-values and high interrupting ratings.They are also the most reliable under high cyclic loading conditions.

All fuses can be fitted with microswitches.

Features / Benefits
  • High interrupting rating 200 kA
  • Very low I2t-values
  • Voltage ratings AC 690/700 V and AC 1250/1300 V
  • Satisfies for North American and European standard
  • Reliable also at high cyclic loading
  • Fuse-bases and accessories are available
Product List (Click on Product Part No. to Download Detail Technical Catalog)
 
Fuse Links AC 690/700 V
Size Rated Voltage [V] Design Indicator Type Part No. Type
1 690/700 US-Type short without 20 617 31 SQB 1
1 690/700 US-Type short fitting for micro switch 20 616 32 SQB 1
2 690/700 US-Type short without 20 627 31 SQB 2
2 690/700 US-Type short fitting for micro switch 20 626 32 SQB 2
3 690/700 US-Type short wihout 20 637 31 SQB 3
3 690/700 US-Type short fitting for micro switch 20 636 32 SQB 3
1 690/700 US-Type long without 20 619 31 SQB 1
1 690/700 US-Type long fitting for micro switch 20 618 32 SQB 1
2 690/700 US-Type long without 20 629 31 SQB 2
2 690/700 US-Type long fitting for micro switch 20 628 32 SQB 2
3 690/700 US-Type long without 20 639 31 SQB 3
3 690/700 US-Type long fitting for micro switch 20 638 32 SQB 3
1 690/700 UNC threads without 20 663 31 SQB 1
1 690/700 UNC threads fitting for micro switch 20 664 32 SQB 1
2 690/700 UNC threads without 20 673 31 SQB 2
2 690/700 UNC threads fitting for micro switch 20 674 32 SQB 2
3 690/700 UNC threads without 20 683 31 SQB 3
3 690/700 UNC threads fitting for micro switch 20 684 32 SQB 3
1 690/700 80 mm Fix. Center without 20 610 31 SQB 1
1 690/700 80 mm Fix. Center fitting for micro switch 20 612 32 SQB 1
2 690/700 80 mm Fix. Center without 20 620 31 SQB 2
2 690/700 80 mm Fix. Center fitting for micro switch 20 622 32 SQB 2
3 690/700 80 mm Fix. Center without 20 630 31 SQB 3
3 690/700 80 mm Fix. Center fitting for micro switch 20 632 32 SQB 3
1 690/700 110 mm Fix. Center without 20 613 31 SQB 1
1 690/700 110 mm Fix. Center fitting for micro switch 20 615 32 SQB 1
2 690/700 110 mm Fix. Center without 20 623 31 SQB 2
2 690/700 110 mm Fix. Center fitting for micro switch 20 625 32 SQB 2
3 690/700 110 mm Fix. Center without 20 633 31 SQB 3
3 690/700 110 mm Fix. Center fitting for micro switch 20 635 32 SQB 3
1 690/700 Metric threads without 20 660 31 SQB 1
1 690/700 Metric threads fitting for micro switch 20 661 32 SQB 1
2 690/700 Metric threads without 20 670 31 SQB 2
2 690/700 Metric threads fitting for micro switch 20 671 32 SQB 2
3 690/700 Metric threads without 20 680 31 SQB 3
3 500/550 Metric threads without 20 680 52 SQB 3
3 690/700 Metric threads fitting for micro switch 20 681 32 SQB 3
3 500/550 Metric threads fitting for micro switch 20 681 52 SQB 3
4 690 Metric threads fitting for micro switch 20 695 32 SQB 4
2 690/700 Double Body fitting for micro switch 20 678 32 SQB 2-2
3 690/700 Double Body fitting for micro switch 20 688 32 SQB 3-2
 
Fuse Links AC 1250/1300 V
Size Rated Voltage [V] Design Indicator Type Part No. Type
1 1250/1300 US-Type long without 20 719 31 SQB 1
1 1250/1300 US-Type long fitting for micro switch 20 718 32 SQB 1
2 1250/1300 US-Type long without 20 729 31 SQB 2
2 1250/1300 US-Type long fitting for micro switch 20 728 32 SQB 2
3 1250/1300 US-Type long wihout 20 739 31 SQB 3
3 1250/1300 US-Type long fitting for micro switch 20 738 32 SQB 3
1 1250/1300 UNC threads without 20 763 31 SQB 1
1 1250/1300 UNC threads fitting for micro switch 20 764 32 SQB 1
2 1250/1300 UNC threads without 20 773 31 SQB 2
2 1250/1300 UNC threads fitting for micro switch 20 774 32 SQB 2
3 1250/1300 UNC threads wihout 20 783 31 SQB 3
3 1250/1300 UNC threads fitting for micro switch 20 784 32 SQB 3
3 1250/1300 UNC threads fitting for micro switch 20 784 52 SQB 3
1 1250/1300 110 mm Fix. Center without 20 713 31 SQB 1
1 1250/1300 110 mm Fix. Center fitting for micro switch 20 715 32 SQB 1
2 1250/1300 110 mm Fix. Center without 20 723 31 SQB 2
2 1250/1300 110 mm Fix. Center fitting for micro switch 20 725 32 SQB 2
3 1250/1300 110 mm Fix. Center wihout 20 733 31 SQB 3
3 1250/1300 110 mm Fix. Center fitting for micro switch 20 735 32 SQB 3
1 1250/1300 Metric threads without 20 760 31 SQB 1
1 1250/1300 Metric threads fitting for micro switch 20 761 32 SQB 1
2 1250/1300 Metric threads without 20 770 31 SQB 2
2 1250/1300 Metric threads fitting for micro switch 20 771 32 SQB 2
3 1250/1300 Metric threads without 20 780 31 SQB 3
3 1250/1300 Metric threads fitting for micro switch 20 781 32 SQB 3
3 1250/1300 Metric threads fitting for micro switch 20 781 52 SQB 3
2 1250/1300 Metric threads Double Body 20 778 32 SQB 2-2
3 1250/1300 Metric threads Double Body 20 788 32 SQB 3-2
 
Fuse Base
Rated Voltage [V] Fixing Center [mm] Rated Current [A] Part No. 
900 80 630 21 313 01
1 400 110 630 21 323 01
900 80 1 250 21 313 02
1 400 110 1 250 21 323 02
 
Micro Switch
Type Rated Voltage DC [V] Part No. 
B-Switch  250 28 003 10
B-Switch  250 28 003 11
B-Switch  250 28 003 12
B-Switch  250 28 003 20
B-Switch  250 28 003 21
B-Switch  250 28 003 22
B-Switch  250 28 004 10
B-Switch  250 28 004 11
B-Switch  250 28 004 12
B-Switch  250 28 004 20
B-Switch  250 28 004 21
B-Switch  250 28 004 22
M-Switch  250 28 001 04
 
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