SIEMENS
3/129
Siemens IC 10 · 2017
Power Contactors for Switching Motors
SIRIUS 3RT12 and 3TF6 vacuum contactors
3
SIRIUS vacuum contactors
Vacuum contactors
Type
3RT1264
3RT1265
3RT1266
3RT1275
3RT1276
3TF68
3TF69
Size
S10
S12
14
Short-circuit protection
Main circuit
Fuse links, operational class gG:
LV HRC, type 3NA; DIAZED, type 5SB;
NEOZED, type 5SE
according to IEC 60947-4-1/DIN EN 60947-4-1
• Type of coordination "1"
A
500
800
1 000
1 250
• Type of coordination "2"
A
500
800
500
630
• Weld-free
(test conditions according to IEC 60947-4-1)
A
400
500
400
500
Auxiliary circuit
Short-circuit test
• Fuse links, operational class gG:
DIAZED, type 5SB; NEOZED, type 5SE
(weld-free fuse protection at
I
k
1 kA)
A
10
• Miniature circuit breaker with C characteristic
(short-circuit current
I
k
400 A)
A
10
Short-circuit protection for contactors with overload
relays
See Configuration Manual "Configuring SIRIUS – Selection Data for Fuseless Load Feeders",
© Siemens AG 2016