| KRAUS & NAIMER |
L1251 - Electrical Data |
1.12.2006 |
Switch features:
- S2 (88x88mm) Front element size (can be changed by mountings and optional extras)
Approvals:
| Approved |
Confirms to requirements |
No listing required |
| CSA, CUR, CURUS, UR |
BS EN, CH, GOST, IEC, VDE |
D, FI, N, ÖVE, S |
BS EN...BS EN 60947 - British Standards Institution, CCC...CCC - China Compulsory Certification, CH...Schweizerischer Elektrotechnischer Verein, CSA...Canadian Standards Association, CUL...Canadian National Standards - Listed, CULUS...Canadian National and United States Standards - Listed, CUR...Canadian National Standards - Recognized, CURUS...Canadian National and United States Standards - Recognized, D...Danmarks Elektriske Materiellkontrol, FI...Sähkötarkastuskeskus, GOST...GOST - gosudarstvennyj standard, IEC...IEC 60947 - International Electrical Commission (IEC) Recommendation, N...Norges Elektriske Materiellkontroll, ÖVE...Österreichischer Verband für Elektrotechnik, RuMRS...Russian Maritime Register of Shipping, S...Svenska Elektriska Materielkontrollanstalten, UL...United States Standards - Listed, UR...United States Standards - Recognized, VDE...VDE 0660 - Verband Deutscher Elektrotechniker
AC-Values:
IEC 60947-3, EN 60947-3, VDE 0660 part 107:
| Rated Operational Voltage Ue | | 690V | 1) |
| Rated Insulation Voltage Ui | | 690V | 1) |
| Rated Thermal Current Iu/Ith | | 1250/1100A (Ambient temperature +35°C during 24 hours with peaks up to +40°C / Ambient temperature +55°C during 24 hours with peaks
up to 60°C) | 2) |
| Rated Operational Current Ie |
| AC-20A No-load operation |
20V-690V:
| 1250A | 2) |
| AC-20B Occasional switching under load cos Phi 0,8 3 phase, 3 pole and 1 phase, 2 pole |
220V-240V:
| 630A | 2) |
|
|
|
500V-500V:
| 500A | 2) |
|
|
|
660V-690V:
| 400A | 2) |
| AC-21B Occasional switching of resistive loads, including moderate overloads 3 phase, 3 pole and 1 phase, 2 pole |
220V-240V:
| 400A | 2) |
|
|
|
500V-500V:
| 350A | 2) |
|
|
|
660V-690V:
| 300A | 2) |
| Rated Utilization Category |
| AC-23B Occasional switching of motors or other high inductive loads |
|
|
3 phase, 3 pole |
220V-240V:
| 45kW | 2) |
|
|
|
380V-440V:
| 90kW | 2) |
|
|
|
500V-500V:
| 110kW | 2) |
|
|
|
660V-690V:
| 65kW | 2) |
1)...IEC 60947-3, EN 60947-3, VDE 0660 part 107 - Valid for lines with grounded common neutral termination, overvoltage category
III, Other values on request.
2)...IEC 60947-3, EN 60947-3, VDE 0660 part 107
UL/Canada:
| Rated Voltage | | 600V | 1) |
| Rated Insulation Voltage Ui | | 600V | 1) |
| Rated Thermal Current | | 1250A | 1) |
| Interrupting Rating |
110V-600V:
| 200A | 1) |
1)...UL/Canada - Refer to International Standards and Approvals
General:
| Minimum Voltage | | on request | |
| Rated Impulse Withstand Voltage Uimp | | 6kV | 1) |
| Short Circuit Protection |
| Max. fuse size (aR-characteristic) | | 1250A | |
| Rated short-time withstand current (1s-current) | | on request | |
| Ambient Temperature of Stages (for switches with electro-mechanical accessories refer to optional extra) |
| open at 100% Iu/Ith | | 55°C during 24 hours with peaks up to 60°C; Permissible load see Rated Thermal Current | |
| Storage temperature | | -40°C to 85°C (in case of temperature below -5°C no shock load permissible) | |
| Terminal lead material | | copper wires only | |
| For connections with cable terminal or copper busbar |
| Connecting screw | | M16 | |
| Length of connecting screw | | 50mm | |
1)...IEC 60947-3, EN 60947-3, VDE 0660 part 107 - Valid for lines with grounded common neutral termination, overvoltage category
III, Other values on request.