| KRAUS & NAIMER |
KH25 - Electrical Data |
1.12.2006 |
Switch features:
- S0 (48x48mm) Front element size (can be changed by mountings and optional extras)
- Terminal screws accessible from the installation view
- Designed for vertical wiring (resp. horizontal for -V mountings: e.g. VE-V, FS1-V)
- Finger-proof terminals (IP20)
- Forced opening and closing of the contacts; All terminals in one plane
- Approved by UL as 'disconnect switch for use in motor circuits'
Approvals:
| Approved |
Confirms to requirements |
No listing required |
| CSA, CUL, CULUS, GOST, UL |
BS EN, CH, D, FI, IEC, N, ÖVE, S, VDE |
|
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 | | 800 V (Suitable for no load switching applications (AC-20A) above 690V) | 1) |
| Rated Insulation Voltage Ui | | 800 V (Suitable for no load switching applications (AC-20A) above 690V) | 1) |
| Rated Thermal Current Iu/Ith | | 25A | 2) |
| Breaking Capacity |
220V-240V:
| 250A | 2) |
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|
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380V-440V:
| 250A | 2) |
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|
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660V-690V:
| 180A | 2) |
| Disconnection property up to | | 690V | 1) |
| Rated Operational Current Ie |
| AC-21A Switching of resistive loads, including moderate overloads |
|
|
For switching of power >1kW | | 25A | 2) |
| AC-22A Switching of combined resistive or low inductive loads including moderate overloads | | 25A | 2) |
| Rated Utilization Category |
| AC-3 Direct-on-line starting, star-delta starting |
|
|
3 phase, 3 pole |
220V-240V:
| 4kW | 2) |
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|
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380V-440V:
| 7.5kW | 2) |
|
|
|
500V-500V:
| 7.5kW | 2) |
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|
|
660V-690V:
| 7.5kW | 2) |
|
|
1 phase, 2 pole |
220V-240V:
| 2.5kW | 2) |
|
|
|
380V-440V:
| 5kW | 2) |
| AC-23A Frequent switching of motors or other high inductive loads |
|
|
3 phase, 3 pole |
220V-240V:
| 7kW | 2) |
|
|
|
380V-440V:
| 12kW | 2) |
|
|
|
500V-500V:
| 15kW | 2) |
|
|
|
660V-690V:
| 17kW | 2) |
|
|
1 phase, 2 pole |
220V-240V:
| 3.3kW | 2) |
|
|
|
380V-440V:
| 5.5kW | 2) |
| AC-23B Occasional switching of motors or other high inductive loads |
|
|
3 phase, 3 pole |
220V-240V:
| 7kW | 2) |
|
|
|
380V-440V:
| 12kW | 2) |
|
|
|
660V-690V:
| 17kW | 2) |
|
|
1 phase, 2 pole |
220V-240V:
| 3.3kW | 2) |
|
|
|
380V-440V:
| 5.5kW | 2) |
| Auxiliary contacts |
| Rated Insulation Voltage Ui | | 440V | 1) |
| Rated Impulse Withstand Voltage Uimp | | 4kV | 1) |
| Rated Thermal Current Iu/Ith | | 10A | 2) |
| AC-21A Switching of resistive loads, including moderate overloads | | 10A | 2) |
| AC-15 Switching of control devices, contactors, valves etc. |
110V-240V:
| 2.5A | 2) |
|
|
|
380V-440V:
| 1.5A | 2) |
| Short Circuit Protection: Max. fuse size (gl-characteristic) | | 10A | 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 | | 25A | 1) |
| Ampere Rating - Resistive or low inductive loads |
| For switching of power >1kW | | 25A | 1) |
| Ratings |
| Standard motor load, DOL Rating (similar AC-3) |
|
|
3 phase, 3 pole |
110V-120V:
| 1.5HP | 2) |
|
|
|
220V-240V:
| 3HP | 2) |
|
|
|
440V-480V:
| 7.5HP | 2) |
|
|
|
550V-600V:
| 7.5HP | 2) |
| Auxiliary contacts |
| Rated Voltage | | 300V | 2) |
| Rated Thermal Current | | 10A | 2) |
| Ampere Rating - Resistive or low inductive loads | | 10A | 2) |
| Pilot Duty, Heavy | | A300VAC | 2) |
1)...UL/Canada - Refer to International Standards and Approvals
2)...UL/Canada
General:
| Minimum Voltage | | on request | |
| Power loss per contact at Iu | | 0.3W | |
| Resistance to vibration | | on request | |
| Resistance to shock | | on request | |
| Rated Impulse Withstand Voltage Uimp | | 6kV | 1) |
| Short Circuit Protection |
| Max. fuse size (gL/gG-characteristic) | | 35A | |
| Rated short-time withstand current (1s-current) | | 500A | |
| Ambient Temperature of Stages (for switches with electro-mechanical accessories refer to optional extra) |
| open at 100% Iu/Ith | | 50°C during 24 hours with peaks up to 55°C | |
| enclosed at 100% Ithe | | 35°C during 24 hours with peaks up to 40°C | |
| Storage temperature | | -40°C to 85°C (in case of temperature below -5°C no shock load permissible) | |
| Terminal lead material | | copper wires only | |
| Max. Permissible Wire Gage |
| for box terminal Single-core or stranded wire | | 6mm2 | |
|
| | AWG 10 | |
| for box terminal Flexible wire without sleeving | | 4mm2 | |
|
| | AWG 12 | |
| for box terminal Flexible wire with sleeving | | 4mm2 | |
| Auxiliary contacts |
| Max. Permissible Wire Gage: Single-core or stranded wire | | 1.5mm2 | |
|
| | AWG 14 | |
| Max. Permissible Wire Gage: Flexible wire | | 1.5mm2 | |
|
| | AWG 16 | |
| Max. Permissible Wire Gage: Flexible wire with sleeving in accordance with DIN 46228 | | 1.5mm2 | |
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.