SQB3 aR 690V fuse link for semiconductors Flush End Contact M12
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SQB3 aR 690V fuse link for semiconductors Flush End Contact M12

SQB3 Square body aR fuse links for semiconductors

 

NEW

Download technical data

REF 250525 / 250530 / 250535 / 250540 / 250545 / 250550 / 250555 / 250560 / 250565 / 250570

Range

SIZE Un (V AC) In (A) REFERENCE
SQB3 690V 500 250525
550 250530
630 250535
700 250540
800 250545
900 250550
1000 250555
1100 250560
1250 250565
1400 250570

Technical data

Rated voltage 690V AC
Rated current 500A...1400A
Rated breaking capacity 120kA
Operating class aR
Minimum breaking current 3,5·In
Rated frequency 42...62Hz
Max. altitude * 2000 m
Storage temperature -40°C ... 90°C
Operating temperature ** -40°C ... 80°C
* For altitudes higher than 2000 m it is necessary to apply a derating in maximum current (consult us).
** For ambient temperatures higher than 25ºC it is necessary to apply a derating in maximum current.

Standards

IEC/EN 60269-1
IEC/EN 60269-4
UL248-1
UL248-13
RoHS Compliant

Dimensions

A B C D E F L
THREAD DEPTH
81 73,5 29,5 M12 12 50,5 109 52

Weight  825gr

t-I characteristics

Cut-off characteristics

Power dissipation

RATED CURRENT
(A)		 REFERENCE POWER DISSIPATION In
(W)		 PREARCING I2t
(A2s)		 I2t 690V
(A2s)
500 250525 84 18700 137000
550 250530 85 24900 182900
630 250535 98 36500 269000
700 250540 100 51500 379000
800 250545 104 82500 600000
900 250550 111 108000 790000
1000 250555 117 153500 1125000
1100 250560 125 196000 1400000
1250 250565 133 282000 2050000
1400 250570 146 383000 2800000

Compatible

microswitch system for
SQUARE BODY aR fuse links
NEW
REF 357015
U 250V
In 4A
Kit includes the striker support, two fixing screws and the microswitch ref. 357020

Other versions

U 690V AC 690V AC
IN 500A...1400A 500A...1400A
Breaking capacity 120kA 120kA