KRAUS & NAIMER CA20R - Electrical Data 1.12.2006

Switch features:
- S0 (48x48mm) Front element size (can be changed by mountings and optional extras)
- Terminal screws accessible laterally (resp. from above and below for -V mountings)
- Designed for vertical wiring (resp. horizontal for -V mountings: e.g. VE-V, FS1-V)
- Finger-proof terminals (IP20)

Approvals:

Approved Confirms to requirements No listing required
CUL, CULUS, 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

Note the remarks in the approval table!: here or at http://www.krausnaimer.com/0/apps.htm

AC-Values:

IEC 60947-3, EN 60947-3, VDE 0660 part 107:
Rated Operational Voltage Ue690V 1)
Rated Insulation Voltage Ui690V 1)
Rated Thermal Current Iu/Ith25A 2)
Rated Operational Current Ie
AC-15 Switching of control devices, contactors, valves etc.
220V-240V:   
8A 2)
380V-440V:   
5A 2)
AC-20A No-load operation25A 2)
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
220V-500V:   
25A 2)
660V-690V:   
25A 2)
Rated Utilization Category
AC-2 Slip ring motor starting, reversing and plugging, star-delta starting 3 phase, 3 pole
220V-240V:   
5.5kW 2)
380V-440V:   
11kW 2)
500V-500V:   
15kW 2)
660V-690V:   
13kW 2)
AC-3 Direct-on-line starting, star-delta starting
3 phase, 3 pole
220V-240V:   
4kW 2)
380V-440V:   
7.5kW 2)
500V-500V:   
7.5kW 2)
660V-690V:   
7.5kW 2)
1 phase, 2 pole
110V-120V:   
1.5kW 2)
220V-240V:   
3kW 2)
380V-440V:   
3.7kW 2)
AC-4 Direct-on-line starting, reversing, plugging and inching
3 phase, 3 pole
220V-240V:   
1.5kW 2)
380V-440V:   
3kW 2)
500V-500V:   
3kW 2)
660V-690V:   
3kW 2)
1 phase, 2 pole
110V-120V:   
0.45kW 2)
220V-240V:   
1.1kW 2)
380V-440V:   
2.2kW 2)
AC-23A Frequent switching of motors or other high inductive loads
3 phase, 3 pole
220V-240V:   
5.5kW 2)
380V-440V:   
11kW 2)
500V-500V:   
11kW 2)
660V-690V:   
11kW 2)
1 phase, 2 pole
110V-120V:   
1.5kW 2)
220V-240V:   
3kW 2)
380V-440V:   
5.5kW 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 Voltage600V 1)
Rated Insulation Voltage Ui600V 1)
Rated Thermal Current30A 1)
Ampere Rating - Resistive or low inductive loads
For switching of power >1kW 30A 1)
Ratings
Standard motor load, DOL Rating (similar AC-3)
3 phase, 3 pole
110V-120V:   
3HP 2)
220V-240V:   
7.5HP 2)
440V-480V:   
10HP 2)
550V-600V:   
10HP 2)
1 phase, 2 pole
110V-120V:   
1.5HP 2)
220V-240V:   
3HP 2)
277V-277V:   
3HP 2)
440V-480V:   
5HP 2)
550V-600V:   
5HP 2)
Heavy motor Load-reversing (similar AC-4)
3 phase, 3 pole
110V-120V:   
1HP 2)
220V-240V:   
2HP 2)
440V-600V:   
5HP 2)
1 phase, 2 pole
110V-120V:   
0.33HP 2)
220V-240V:   
0.75HP 2)
277V-277V:   
1HP 2)
Pilot Duty, HeavyA600 1)
1)...UL/Canada - Refer to International Standards and Approvals
2)...UL/Canada

DC-Values:

Resistive loads (T<=1ms)
Number of series contact(s) DC-switching capacity
1 2 3 4 5 6 8
440V 660V 0.3A
220V 440V 660V 0.5A
110V 220V 330V 440V 550V 660V 1.5A
48V 95V 140V 190V 240V 290V 350V 20A
24V 48V 70V 95V 120V 145V 190V 25A
60V 120V 180V 240V 300V 360V 450V 7.5A

Inductive load (T=50ms)
Number of series contact(s) DC-switching capacity
1 2 3 4 5 6 8
110V 220V 330V 440V 550V 660V 0.5A
60V 120V 180V 240V 300V 360V 450V 1.5A
24V 48V 70V 95V 120V 145V 190V 20A
48V 95V 140V 190V 240V 290V 350V 3A
30V 60V 90V 120V 150V 180V 240V 9A

General:

Minimum Voltage on request
Rated Impulse Withstand Voltage Uimp6kV 1)
Short Circuit Protection
Max. fuse size (gL/gG-characteristic)35A
Rated short-time withstand current (1s-current)280A
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
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
Single-core or stranded wire2x4mm2
2xAWG 10
Flexible wire2x4mm2
2xAWG 12
Flexible wire with sleeving in accordance with DIN 462282x2.5mm2
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.