RT-3 UNIT
RELAY
SLIM, SPACE-SAVING
RELAY TERMINAL FOR
4-POINT OUTPUT
(PA Relay type)
FEATURES
• 33 mm 1.299 inchwide space-saving
type, with four independent points on
a base measuring 33 × 67 mm
1.299×2.638 inch. Contributes to control panel and device downsizing.
• Equipped with PA relays with highsensitivity twin contacts and Au-caldding.
Equipped with 5 mm .197 inch wide PA
relays. The PA relays feature high sensitivity (12 V type: 120 mW, 24 V type: 180
mW) and twin contacts with Au-cladding,
which combine to ensure high reliability
even with minute loads.
• Can be used mounted on a DIN rail or
mounted directly (by screw).
• Equipped with an LED display to allow easy confirmation of operation.
• Incorporates a surge absorber.
Incorporates an absorber circuit for coil
surges. This protects the circuitry of the
controller and prevents operation errors.
• Relay installation and removal can be
easily accomplished with the removal
key accessory.
• Includes a cover as standard equipment for increased safety.
TYPES
Packing quantity
Type
Rated input voltage
Part No.
PA relay
12 V DC
24 V DC
RT3S-12V
RT3S-24V
Inner carton
Outer carton
10 pcs.
100 pcs.
Notes: 1. Cannot be equipped with Power PhotoMOS standard type relays. However, equipping with voltage sensitive type of Power PhotoMOS relays
(AQZ❍❍❍D) is possible.
2. 5 V DC units are also available. Please consult us.
RATINGS
1. Input ratings (per PA relay)
Part No.
Rated input voltage
RT3S-12V
RT3S-24V
12 V DC
24 V DC
Input current (at rated input voltage, 20°C 68°F)
(approx.)
11.5 mA (Relay 10 mA + LED 1.5 mA)
10.5 mA (Relay 7.5 mA + LED 3 mA)
Allowable variation of rated input voltage
(–20 to +55°C –4 to +131°F)
12 V DC ± 10%
24 V DC ± 10%
2. Relay coil specifications (per PA relay) (ref. value)
Relay part No.
Rated coil voltage
Pick-up voltage
(at 20°C 68°F)
(Initial)
Drop-out voltage
(at 20°C 68°F)
(Initial)
PA1a-12V
PA1a-24V
12 V DC
24 V DC
less than 70%
of nominal voltage
more than 5%
of nominal voltage
10% Coil resistance
(±10%)
(at 20°C 68°F)
1,200 Ω ±10%
3,200 Ω ±10%
Rated comsumption
power
3. Output ratings (per PA relay)
Specification
Contact rating
Expected life
(Min. operations)
Item
Rated control capacity (resistive load)
Maximum allowable contact power (resistive load)
Maximum allowable contact voltage
Maximum allowable contact current
Minimum load (ref. value)
Electrical (resistive load)
Mechanical (at 180 cpm)
12
Performance
2 A 250 V AC, 2 A 30 V DC
500 VA (AC), 60 W (DC)
250 V AC, 30 V DC
2A
100 mV 100 µA
105: 2 A 250V AC 105: 2 A 30V DC
3 × 105: 1 A 250V AC
3 × 105: 1 A 30V DC
2 × 107
120 mW
180 mA
RT-3
PERFORMANCE
Item
Between input and output
Between different terminals
(between relays, both ways)
Breakdown voltage
Performance
2,000 Vrms for 1 min.
1,500 Vrms for 1 min.
Min. 100 MΩ (Using 500 V DC megger)
10 to 55 Hz at double amplitude 1 mm .039 inch
10 to 55 Hz at double amplitude 1 mm .039 inch
Min. 196 m/s2 {20G}
Min. 98 m/s2 {10G}
–20°C to +55°C –4°F to +131°F
35% to 85% R.H. (Not condensing)
–30°C to +80°C –22°F to +176°F (Not freezing and condensing)
0.3 to 0.5 Nm {3 to 5 kgf·cm}
Diode (1 A, 400 V)
1.5 A, inverse voltage 40 V
Approx. 100 g 3.53 oz
Insulation resistance
destructive
functional
destructive
Vibration resistance
Shock resistance
functional
Ambient temperature
Ambient humidity
Storage temperature
Terminal screw fasten torque
Coil surge absorber
Cross connection protecting diode
Weight
Notes: 1. The value of breakdown voltage and insulation resistance is the initial one.
2. Condensing occurs when the unit relay is exposed to sudden temperature change in a high temperature and high humidity atmosphere. This
may cause some troubles like insulation failure of the socket or the print circuit board. Take care under this condition
3. Below 0°C 32°F, condensing water can freeze and cause socket contact failures and other problems. Take care under this condition.
DATA
1. Maximum value for switching capacity per relay (output)
100
Resistive AC load
No. of operations, ×104
Contact current, A
4.0
3.0
2. Life curve per relay (output)
2.0
1.0
0.5
0.4
0.3
Resistive DC load
50
30
20
125 V AC resistive load
30 V DC resistive load
250 V AC resistive load
10
0.2
20 30
0.5
50 100
200 300
Contact voltage, V
1.0
2.0 3.0
Switching current, A
DIMENSIONS
mm inch
Internal schematic
7.62
.300
Input terminal portion
33±0.6
1.299±.024
6.2
.244
16-M3 .118 terminal screw
Input side
8.4 .331
13+
14+
15+
16+
9–
10–
11–
12–
LED1
LED2
LED3
LED4
5
6
7
8
1
2
3
4
R2.1 .083
2-M4 .157 screw
mounting position
67±1
2.638±.039
7.4
.291
4.2+0.3
−0.1
.165+.012
−.004
R3.7 .146
Output side
Output terminal portion
With cover removed
4
.157
5.5±0.6
.217±.024
13.8
.543
32±1
1.260±.039
Note: Cannot be equipped with Power PhotoMOS
standard type relays. However, equipping with
voltage sensitive type of Power PhotoMOS relays (AQZ❍❍❍D) is possible.
Panel cutout
±0.6
30
1.181±.024
2-4.3 dia. or M4
2-.169 dia. or M.157
30±0.1
1.181±.004
General tolerance ±0.3 ±.012
13
RT-3
TERMINAL BLOCK
ACCESSORIES
We recommend using wire-pressed terminals for connection
to the terminal portion.
• Applicable electrical wire
0.25 to 1.65 mm2 .01 to .065 inch
mm inch
• Applicable wire-pressed terminals
Short circuit plate
Use when you want to bridge terminals.
For the external dimensions, see the Options section for
—4-point Unit Relay (Power PhotoMOS Relay Type).—
< With insulator >
< Without insulator >
AY3802
AY3803
3 dia. min.
.118 dia. min.
5.6 max.
.220 max. 3 min.
.118 min.
5.6 max.
.220 max.
4
4.5 min.
.157 .177 min.
4
4.5 min.
.157 .117 min.
CAUTIONS FOR USE
1. Operating environment
1) Keep the product as far way as possible
from power cables, high tension equipment, power equipment, equipment with
transmitting devices such as amateur radios, or equipment which generates a
large switching surge.
2) The main unit is made of resin; therefore, do not use it in areas where it may
come in contact with (or be exposed to)
organic solvents such as benzine, thinner,
and alcohol, or strong alkaline substances such as ammonia and caustic soda.
3) Do not use the product in areas where
it may be exposed to flammable gases,
corrosive gases, excessive dust, or moisture, or areas where it may be subjected
to strong vibration or shock.
2. Dropping
If a unit is dropped be sure to check its external appearance and characteristics before using it.
3. Installing and removing the module
1) Firmly insert the module into the socket
with the terminals going in the direction of
the blade receptacles.
2) The module can be easily removed using the removal key.
(1) Insert the removal key into the socket
slots.
(2) Pull the removal key up to remove the
module.
3 Remove the unit from
the DIN rail.
2 Move the
screwdriver in
the direction of
the arrows, and
pull out the lever.
1 Insert the tip of the
flat head screwdriver
into the slot in the
DIN rail locking lever.
4. Wiring and circuit configuration
1) Perform wiring according to the internal
schematic. Take care not to make any
mistakes.
2) We recommend the use of wirepressed terminals for connection to the
terminal portion.
3) When the load is inductive, we recommend adding a diode or surge absorber at
both ends of the load.
5. Installation
1) Perform mounting hole cutout according to the panel cutout drawings.
2) When installing the unit on a DIN rail,
use the DIN rail locking lever on the side
of the unit. Installation is accomplished by
simply fitting the unit onto the rail and
pressing gently.
1 First push in
the DIN rail
locking lever.
DIN rail locking lever
DIN rail
3 Press the unit onto
the DIN rail.
2 Hook the holders on the
unit over the DIN rail.
14
3) To remove the unit from the DIN rail,
use a flat head screwdriver to pull out the
DIN rail locking lever.
6. Transporting and storage
1) If the product is subjected to extreme
vibration while being transported, the relays may become detached, the lead may
become bent, and the unit may become
damaged. Handle the inner and outer
boxes with care.
2) If the product is stored in an extremely
adverse environment, visible defects and
deterioration of performance characteristics may result. We recommend the following storage conditions.
• Temperature: 5 to 30°C 41 to 86°F
• Humidity: Max. 60% R.H.
• Environment: No hazardous substances such as sulfurous acid gases
and little dust.
7. When equipped with Power PhotoMOS relay voltage drive type
Since the Power PhotoMOS relay voltage
drive type does not require the currentcontrolling resistance on the input side, it
can be used together with PA relays on 4point unit relays (PA relay types) or RT-2
relay terminals.
When connecting Power PhotoMOS relay
voltage drive types, since it will be a close
connection, it will be necessary to be
careful of load currents. Be sure to refer to
the information given regarding load currents and ambient temperature characteristics in the precautions given for use of
RT-2 relay terminals.