6721-40 HERGA, 6721-40 Datasheet - Page 8

• Manufacturer Part Number: 6721-40
• Description: VACUUM SWITCH
• Manufacturer: HERGA

Specifications of 6721-40

• Connection Size: 4mm
• Contact Configuration: SPCO
• Contact Current @ Contact Voltage Ac Min: 21A
• Contact Current Ac Max: 21A
• Contact Voltage Ac Max: 250V
• External Diameter: 43mm
• External Length / Height: 38mm

6741 / 6742 ~ Medium Pressure Switches
Silver Contact Microswitch Data
Gold Contact Microswitch Data
Switch Standards:
Approvals Available:
NB
Herga do not accept liability for any pressure operated device used
outside the pressure range specified by the company.
1999
As a consequence of our policy of continual improvement, we reserve the right to change without notice any detail in this publication. Please see our Conditions of Sale.
UL/CSA Only
Average Life
Expectancy
Electrical Rating
Average Life
Expectancy
Electrical Rating
AC
DC
AC
Benefits
Switches set to specific rising or falling pressures
UL recognised versions available
High performance repeatability
Mechanical
Electrical
Mechanical
Electrical
Voltage
Voltage
250V
250V
125V
110V
220V
250V
125V
12V
24V
60V
6V
EN 60730, EN 61058 and UL 508
CE, BEAB, CSA, DEMCO, IMQ, KEMA, NEMCO,
OVE, SEMCO, SET I, SEV, UL, VDE
FOR FURTHER INFORMATION TEL: [phone] FAX: [phone]
0.25A
0.5A
0.1A
0.1A
Res.
Res.
21A
21A
21A
2.0 x 10
21A
15A
2.0 x 10
8A
1A
Max. Electrical Load
Max. Electrical Load
5
6
@ 10A 1.0 x 10
@ 10A 1.0 x 10
1.0 x 10
1.0 x 10
0.5A
0.1A
0.1A
0.05
21A
15A
-----
Ind.
Ind.
8A
7A
6
6
(Pf 0.75 Motor)
(Pf 0.75 Motor)
4
4
@ 21A
@ 21A
1HP
1HP
N/A
-----
Special options are available for quantity orders
Electrical Switch Data 2 Pole change over
Contact Rating
Pressure Connection Brass
Setting Accuracy
Withstand Pressure
Temperature Range
Body Material
Diaphragm
Spring
Weight
Model No
Diaphragms in silicon rubber, nitrile, EPDM
Switches with wide or close differentials
Springs in stainless steel
NPT connectors available
6742-20
6742-30
6742-40
6742-50
6742-60
6742-70
6742-80
6742-90
Single or double pole switching
Customised settings available upon request
Various connector options available
Model No
1.5 - 3.5
3.0 - 5.5
60 - 120
16 - 30
25 - 55
45 - 75
5 - 10
8 - 18
21 (8) A 250V ac
± 10% as standard
25 PSI or x 2
-5˚C to + 70˚C
Nylon 12
Neoprene
Spring steel
50gm
P.S.I
6742-20/30/40/50/60
Pressure Range
1 / 8
" BSPT
0.10 - 0.24
0.20 - 0.37
0.34 - 0.68
0.54 - 1.22
1.08 - 2.04
1.70 - 3.79
4.14 - 8.27
3.1 - 5.17
Bar
2 Pole Change over
21 (8) A 250V ac
Brass
± 10% as standard
150 PSI 10 Bar
-5˚C to + 70˚C
Nylon 12
Nitrile fabric
reinforced fitted in
brass pressure
capsule
Spring steel
85gm
6742-70/80/90
1 / 8
Differential
See chart 1
See chart 1
See chart 1
See chart 2
See chart 2
See chart 3
See chart 3
See chart 3
" BSPT
(Fixed)
ISSUE 01