SF4-DC5V Panasonic Electric Works, SF4-DC5V Datasheet - Page 7

• Manufacturer Part Number: SF4-DC5V
• Description: RELAY SAFETY PC MNT 8PST 6A 5VDC
• Manufacturer: Panasonic Electric Works
• Series: SFr

Specifications of SF4-DC5V

• Relay Type: Safety
• Contact Form: 8PST (4 Form A, 4 Form B)
• Contact Rating (current): 6A
• Switching Voltage: 250VAC
• Coil Type: Standard
• Coil Current: 100mA
• Coil Voltage: 5VDC
• Turn On Voltage (max): 3.75 VDC
• Turn Off Voltage (min): 0.75 VDC
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Circuit: 8PST (4 Form A, 4 Form B)
• Contact Rating @ Voltage: 6A @ 250VAC
• Control On Voltage (max): 3.75 VDC
• Control Off Voltage (min): 0.75 VDC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 255-1414

SF
3) 4a4b Type
If the internal contacts (nos. 2, 3, 6, and 7) weld, the armature becomes non-operational and the contact gaps of each of the four form
“a” contacts are maintained at greater than 0.5 mm
For Cautions for Use, see Relay Technical Information
264
9/1/2000
If the external contacts (nos. 1, 4, 5, and 8) weld, gaps of greater than 0.5 mm
and the coil returns to an non-energized state.
The table below shows the state of the other contacts when the current through the welded form “a” contact is 0 V and the rated volt-
age is applied through the form “b” contact.
No.8
No.7
No.6
No.5
No.8
No.7
No.6
No.5
If external connections are made in series.
Even if one of the contacts welds, because the
other contacts operate independently, the contact
gaps are maintained at greater than 0.5 mm
inch.
No.8
No.6
No.7
No.5
Terminal No. 13–14 5–6 9–10 17–18
External Contacts Weld
Contact No.
Internal Contacts Weld
Contact Operation Table
No.1 No.2 No.3 No.4
Non-energized
Energized
19–20 11–12 7–8 15–16
No.5 No.6 No.7 No.8
No.1
No.2
No.3
No.4
No.1
No.2
No.3
No.4
No.1
No.3
No.2
No.4
.020
Note: Contact gaps are shown at the initial state.
If the contacts change state owing to loading/breaking it is necessary to check the actual loading.
Contact No.
No.8
No.6
No.7
No.5
No.8
No.7
No.6
No.5
terminal
Non-energized (when no. 1 contact is welded)
Welded
Energized (when no. 2 contact is welded)
No.
.020
Contact No.
Non-energized
inch. Reliable isolation is thus ensured.
Energized
1
2
3
4
5
6
7
8
>0.5
>0.5
>0.5
1
>0.5
>0.5
>0.5
>0.5
>0.5
2
Weld
>0.5
>0.5
>0.5
>0.5
>0.5
All Rights Reserved, © Copyright Matsushita Electric Works, Ltd.
3
State of other contacts
.020 inch
No.1
No.3
>0.5
>0.5
>0.5
No.2
No.4
No.1
No.2
No.3
No.4
4
If the No. 2 contact welds.
Each of the four form "a" contacts (Nos. 1, 3, 5,
and 7) maintains a gap of greater than 0.5 mm
.020
If the No. 1 contact welds.
The adjacent No. 2 contact maintains a gap of
greater than 0.5 mm
tacts, because the coil is not energized, return to
their normal return state; each of form “a” con-
tacts (nos. 3, 5, and 7) maintains a contact gap of
greater than 0.5 mm
“b” contacts (nos. 4, 6, and 8) return to a closed
state.
>0.5
>0.5
>0.5
are maintained between adjacent contacts
5
Contact gap
min 0.5 mm
inch.
>0.5
>0.5
>0.5
>0.5
>0.5
6
.020 inch
>0.5
>0.5
>0.5
>0.5
>0.5
7
.020
.020
>0.5
>0.5
>0.5
8
inch. The other con-
inch; each of the form
>0.5: contact gap
is kept at min. 0.5
mm
Empty cells: either
closed or open
: contact closed
.020 inch