Is_drc_dc_2, Wiring diagram, Derating curve – Crydom DRA Series Contactors User Manual
Page 2: Warning, Danger

WARNING
RISK OF MATERIAL DAMAGE AND HOT ENCLOSURE
• The product's side panels may be hot, allow the product to
cool before touching.
• Follow proper mounting instructions including torque values.
• Do not allow liquids or foreign objects to enter this product.
Failure to follow these instructions can result in serious injury,
or equipment damage.
HAZARD OF ELECTRIC SHOCK,
EXPLOSION OR ARC FLASH
•
Turn off power supply before
working on this equipment.
Failure to follow these instructions
will result in death or serious injury.
DANGER
Rev: 050911
WIRING DIAGRAM
+
M1
-
M2
+ -
S1
S2
F
R
+
-
-
S1
Open
Closed
Open
Closed
S2
Open
Open
Closed
Closed
Forward
Off
On
Off
Off
Reverse
Off
Off
On
Off
Input/Output
1
2
3
4
5
6
7
8
9
10
S1 switch
S2 switch
FWD Direction
c
e
s
m
0
2
c
e
s
m
0
2
REV Direction
20 msec
interlock
TIME DIAGRAM
(C)
(C, F)
(D)
(D)
(E)
(E)
(F)
Unless otherwise noted, all ratings are at 0 mm air gap for adjacent similar parts.
Resistive Load Current rating for DRA4D250x6 is 5.5 A @ 0 mm air gap. For maximum ratings use 45 mm air gap
No grounding wire required. DC inductive loads must be diode suppressed
3 Input control terminal screws M2.5 Slotted Drive
4 Output terminal screws (+ & -/M1 & M2) M2.5 Combo Drive
Minimum wire strip length 0.197 in [5 mm], maximum 0.235 in [6 mm] for input and output terminals
fig. 3
Wiring Diagram for
DC Motor Reversing Contactor.
DERATING CURVE
(A)
(A,B)
fig. 2
Derating Curve for
DC Motor Reversing Contactor.
0.0
2.0
4.0
6.0
8.0
10.0
12.0
Lo
ad
C
urr
en
t (
Am
ps
)
Ambient Temperature (°C)
DRA4D100x12
0
10
20
30
40
50
60
DRA4D250x6
Temp.
40°C
¼ HP 4 FLA @ 90 VDC
60°C
¼ HP 3 FLA @ 90 VDC
¼ HP 2 FLA @ 180 VDC
¼ HP 1 FLA @ 180 VDC
DRA4D100x12
DRA4D250x6
6
6
(B)