SF2-24V PANASONIC EW, SF2-24V Datasheet - Page 3

• Manufacturer Part Number: SF2-24V
• Description: RELAY, FORCED CONTACT, DPCO, 24VDC
• Manufacturer: PANASONIC EW

Specifications of SF2-24V

• Coil Voltage Vdc Nom: 24V
• Coil Resistance: 1.152kohm
• Contact Current Max: 6A
• Contact Voltage Ac Nom: 250V
• Contact Voltage Dc Nom: 30V
• No. Of Poles: 2
• Relay Mounting: PC Board
• External Width: 25mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REFERENCE DATA
1. Operate/release time
SAFETY STRUCTURE OF SF RELAYS
This SF relay design ensures that
subsequent operations shut down and
can automatically return to a safe state
when the SF relay suffers overloading
and other circuit abnormalities
1. Forced operation method
2. Separate chamber method
3. 2a2b contact
(2a2b, 3a1b, types)
(2a2b, 3a1b, types)
3a1b contact
50
40
30
20
10
0
80
90
Coil applied voltage, %V
Operate time
Release time
100
110
120
Max.
x
Min.
Max.
x
Min.
All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd.
The two contacts “a” and “b” are coupled with the same
card. The operation of each contact is regulated by the
movement of the other contact.
In independent chambers, the contacts “a” and “b” are
kept apart by a body/card separator or by the card itself.
Structure with independent COM contact of (2a2b),
(3a1b), contacts.
Card
2. Coil temperature rise
Coil applied voltage: 120%V
Contact switching current: 6A
(unforeseen externally caused circuit or
device breakdowns, end of life incidents,
and noise, surge, and environmental
influences) owing to contact welding,
spring fusion or, in the worst-case
Case separator
60
50
40
30
20
10
0
30
Structure
1
Ambient temperature, °C
Weld
50
Card
Min. 0.5 mm
70
Contact a
Contact b
2
Inside the coil
Contact
.020 inch
Contact a
Body
separator
Contact b
scenario, relay breakdown (coil rupture,
faulty operation, faulty return, and fatigue
and breakage of the operating spring and
return spring), and even in the event of
end of life.
Even when one contact is welded closed,
the other maintains a gap of greater than
0.5 mm
In the diagram on the left, the lower contact
“b” have welded but the upper contact “a”
maintain at a gap of greater than 0.5 mm
.020
Subsequent contact movement is
suspended and the weld can be detected
Prevents shorting and fusing of springs and
spring failure owing to short-circuit current.
As shown on the diagram on the left, even if
the operating springs numbered 1 and 2
there is no shorting between “a” and “b”
contacts.
Independent COM enables differing pole
circuit configurations. This makes it
possible to design various kinds of control
circuits and safety circuits.
inch.
.020
inch.
Operation
SF