85 Series - Screw Terminal Sequence
DPST, 20 Amps
The 85 series relay is a panel mounted, screw terminal, open style sequencing relay. This two pole
relay has a single coil which operates a ratchet wheel. Control cams, on the ratchet wheel shaft, step
from one position to the next on each impulse to the coil. A 50 millisecond pluse will step the relay.
Coils are for momentary duty only. The 85 series may be supplied in any sequence up to 12 steps.
Contacts are single throw.
GENERAL SPECIFICATIONS (@ 25° C)
Contacts:
Contact Configuration
Contact Material
Contact Rating
120 / 240VAC Resistive
28VDC Resistive
Contact Resistance, Initial
Coil:
Coils Available
Nominal Coil Power
Input Voltage Tolerance - AC
Input Voltage Tolerance - DC
Drop out voltage
Duty
Timing:
Operate Time (max)
Release Time (max)
Dielectric Strength:
Across Open Contacts
Between Mutally Insulated Points
Insulation Resistance
Temperature:
Operating
Storage
Life Expectancy:
Electrical (full load operations)
Mechanical (no load operations)
Miscellaneous:
Mounting Position
Enclosure
Weight
DPST
Fine Silver
20 Amp
20 Amp
100 milliohms max @ 6VDC
AC or DC up to 600V
18VA 11W
85% to 110% of nominal
80% to 110% of nominal
10% of nominal
Momentary
50mS
50mS
1500Vrms
1500Vrms
1,000 Megohms min @ 500VDC
-20 to 60°C (-4 to 140°F)
-40 to 105°C (-40 to 221°F)
100,000
500,000
Any
Open
25.6oz (650 grams)
AXA Wire Diagram
(Top View)
4/5
www.struthers-dunn.com
(843) 664-3303
Latching / Sequencing Relays
10 - 100 Amp
Dimensions Shown in inches & (millimeters)
Outline Dimensions
AC Coil, 50/60HZ
Nominal Resistance
voltage ohms
±10%
24
27
120
771
110-125 -
240
3290
440
14700
550
22000
DC Coil
Nominal Resistance
voltage ohms
±10%
24
62
120
-
110-125 1475
240
6100
440
-
550
-
5.00
(127.1)
3.00
(76.2)
2.38
(60.4)
R .09
(2.3)
.31
(7.9)
4.37
(111.1)
Ordering Code
Series
85
85
AXA
H3
-120VAC
Contact Arrangement
AXA 1 - N.O & 1 - N.C.
BBX (2PST - N.O.)
Options
Open style construction - NO CODE
Sheet Metal Housing - CODE H3
Coil Voltage
AC: 24, 120, 240, 440, 550 (Add VAC)
DC: 24, 115-125, 240 (Add VDC)
Relay
85AXA
85BXX
Standard Contact Sequences
Step
Contact A
Contact B
Contact A
Contact B
1
0
X
0
0
2
X
0
X
X
3
0
X
0
0
4
X
0
X
X
(Repeat)
0 = Contact open
X = Contact closed
*8 Tooth ratchet is standard
www.struthers-dunn.com
(843) 664-3303
4/6
Section 4
Coil Specifications
2.67
(67.9)
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