Slim, Space-saving,
4-point Unit Relay
RT-3 UNIT RELAY
4-POINT TERMINAL
[PA-N Relay type, PhotoMOS Power
(Voltage sensitive type)]
FEATURES
1. Slim, space-saving type (33 mm 1.299 inch wide) with four
independent points on a base measuring 33 × 67 mm 1.299
× 2.638 inch. This contributes to a more compact control
panel.
2. Can be mounted on a DIN rail or mounted directly (by
screw).
3. Equipped with an LED display to allow easy confirmation
of operation.
4. Possible to select a relay for use in the 4-point terminal in
accordance with its application.
4-point Terminal
[PA-N relay,
PhotoMOS Power
(Voltage sensitive type)]
Mountable relay
RT-3 Unit relay
PA-N relay
PhotoMOS Power
(Voltage sensitive type)
RoHS compliant
TYPES
1. RT-3 Unit relay
Contact arrangement
1 Form A × 4
Rated input voltage
12 V DC
24 V DC
Part No.
RT3SN-12V
RT3SN-24V
Rated input voltage
Part No.
12, 24V DC
RT3BB
Standard packing: Carton: 1 pc.; Case: 20 pcs.
Note: PA-N relays are installed.
2. 4-point Terminal
Type
PA-N relay,
PhotoMOS Power type (Voltage sensitive type)
Standard packing: Carton: 1 pc.; Case: 20 pcs.
3. Mountable relays for 4-point Terminal (per relay, at 25°C 77°F, initial)
Product Name
PA-N relay
Part No.
APAN3112, APAN3124
AQZ10∗D (DC only)
AQZ20∗D (AC/DC dual use)
PhotoMOS Power type (Voltage sensitive type)
Notes: 1. Never install relays into this product other than those given above. Doing so will cause malfunction, breakdown, and breakdown of the connected product.
2. Cannot be equipped with PhotoMOS Power standard type relays. However, equipping with voltage-sensitive type of PhotoMOS Power type is possible.
RATING
1. RT-3 Unit relay
1) Input ratings (per PA-N relay)
Part No.
Rated input voltage
RT3SN-12V
RT3SN-24V
12 V DC
24 V DC
Input current
(at rated input voltage, 20°C 68°F)
Approx. 10.7 mA (Relay 9.2 mA + LED 1.5 mA)
Approx. 7.6 mA (Relay 4.6 mA + LED 3.0 mA)
–1–
Allowable variation of rated input voltage
(–20 to +55°C –4 to +131°F)
12 V DC ± 10%
24 V DC ± 10%
ASCTB369E 201701-T
RT-3 Unit Relay/4-point Terminal (PA-N Relay type)
2) PA-N relay coil specifications (Reference value)
Relay part No.
Pick-up voltage
(Initial) (at 20°C 68°F)
Drop-out voltage
(Initial) (at 20°C 68°F)
Coil resistance
(±10%) (at 20°C 68°F)
Rated operating power
70%V or less
of Rated voltage
(initial)
5%V or more
of Rated voltage
(initial)
1,309 Ω
110 mW
5,236 Ω
110 mW
APAN3112
APAN3124
3) Output ratings (per PA-N relay)
Specification
Item
Contact rating (Resistive load)
Max. switching power (Resistive load)
Max. switching voltage
Max. switching current
Min. switching load (Reference value)
Mechanical life
Contact data
Expected life
Specifications
3 A 250 V AC, 3 A 30 V DC
750 VA (AC), 90 W (DC)
250 V AC, 30 V DC
3A
1 mA, 5 V DC
Min. 2 × 107 (at 180 times/min.)
Min. 3 × 104: 3 A 250V AC
Min. 3 × 104: 3 A 30V DC
Min. 105: 2 A 250V AC
Min. 105: 2 A 30V DC
Electrical life (Resistive load)
Note: During 4-point simultaneous operation, the rating per point is also as shown above.
2. 4-point Terminal
1) Input ratings (per relay)
Rated input voltage
12, 24V DC
Allowable variation of rated input voltage
12V DC±10%, 24V DC±10%
Allowable input current
0.2A
Note: The input voltage value above is the allowable current when no relay is installed. Please note that input voltage is determined by the type of relay installed.
2) Input rating when PA-N relay installed (per relay, at 20°C 68°F)
Type
Rated input
voltage
APAN3112
12V DC
APAN3124
24V DC
Operate voltage (Initial)
Release voltage (Initial)
Max. 9.5V DC
(Relay max. 8.4V + include diode max. 1.1V)
Max. 17.9V DC
(Relay max. 16.8V + include diode max. 1.1V)
Min. 1.0V DC
(Relay min. 0.6V + include diode min. 0.4V)
Min. 1.6V DC
(Relay min. 1.2V + include diode min. 0.4V)
Input current
(during application of rated voltage)
Approx. 10.7mA
(Relay 9.2mA + LED 1.5mA)
Approx. 7.6mA
(Relay 4.6mA + LED 3.0mA)
3) Input rating when PhotoMOS Power voltage sensitive type installed (per relay, at 25°C 77°F)
Type
Rated input
voltage
Operate voltage (Initial)
Release voltage (Initial)
AQZ∗0∗D
12, 24V DC
Max. 5.1V DC
(Relay max. 4.0V + include diode max. 1.1V)
Min. 1.2V DC
(Relay min. 0.8V + include diode min. 0.4V)
Input current
(during application of rated input voltage)
Approx. 10.0mA
(Relay 7.0mA + LED 3.0mA)
4) Output rating (per relay)
Allowable load voltage
600V (DC), 600V (AC peak value)
Allowable load current
3A
Note: The value above is the allowable value when no relay is installed.
Please note that limitations apply to the load voltage and current depending on the type of relay installed.
5) Output rating when PA-N relay installed (per relay, at 20°C 68°F)
Specification
Item
Contact rating (Resistive load)
Max. switching power (Resistive load)
Max. switching voltage
Max. switching current
Min. switching load (Reference value)
Mechanical life
Contact data
Expected life
Specifications
3 A 250 V AC, 3 A 30 V DC
750 VA (AC), 90 W (DC)
250 V AC, 30 V DC
3A
1 mA, 5 V DC
Min. 2×107 (at 180 times/min.)
Min. 3×104: 3 A 250V AC, 3 A 30V DC
Min. 105: 2 A 250V AC, 2 A 30V DC
Electrical life (Resistive load)
Note: During 4-point simultaneous operation, the rating per point is also as shown above.
6) Output rating when PhotoMOS Power voltage sensitive type installed (per relay, at 25°C 77°F)
Possible relays
Type
DC only
Part No.
AQZ102D
AQZ105D
AQZ107D
AQZ104D
Maximum load voltage
(DC, AC peak value)
Continuous load current
(DC, AC peak value)
60V
1.80A
100V
200V
400V
1.15A
0.55A
0.30A
Possible relays
Type
Part No.
Maximum load voltage
(DC, AC peak value)
Continuous load current
(DC, AC peak value)
AC, DC
dual use
AQZ202D
AQZ205D
AQZ207D
AQZ204D
60V
100V
200V
400V
1.350A
0.900A
0.450A
0.225A
Notes: 1. During 4-point simultaneous operation, the rating per point is also as shown above.
2. Please use a load current that is within the range of the data given below in “REFERENCE DATA Load current vs. ambient temperature characteristics”.
–2–
ASCTB369E 201701-T
RT-3 Unit Relay/4-point Terminal (PA-N Relay type)
SPECIFICATIONS
RT-3 Unit relay/4-point Terminal
Item
Dielectric
strength
(Initial)
Specifications
Between input and output
Between different terminals
(between relays, both ways)
Insulation resistance (Initial)
Vibration
resistance
Destructive
Functional
Condition
2,000 Vrms
for 1 min.
1,500 Vrms
for 1 min.
Min. 100 MΩ (Measurement at same location as “Breakdown
voltage” section.)
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
Destructive
Functional
Ambient temperature
Condition
Ambient humidity
Storage temperature
Terminal screw fasten torque
Coil surge absorber
Cross connection protecting diode
Unit weight
Min. 196 m/s2
Min. 98 m/s2
–20 to +55°C –4 to +131°F
35 to 85% R.H.
–30 to +80°C –22 to +176°F
0.3 to 0.5 N·m
Diode (1A, 400V)
1 A, inverse voltage 400 V
Approx. 100 g 3.53 oz
Shock
resistance
In vertical, horizontal and longitudinal directions
In vertical, horizontal and longitudinal directions
In vertical, horizontal and longitudinal directions
In vertical, horizontal and longitudinal directions
Not freezing and condensing
Not condensing
Not freezing and condensing
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.
REFERENCE DATA
1. Maximum value for switching capacity
(output)
2. Load current vs. ambient temperature
characteristics (DC only)
3. Load current vs. ambient temperature
characteristics (AC/DC dual use)
Per PA-N relay
10
2
DC resistive load
1
Load current, A
Load current, A
Contact current, A
2
AQZ102D
AC resistive load
AQZ105D
1
AQZ202D
1
AQZ205D
AQZ107D
AQZ207D
AQZ104D
0.1
1
10
100
Contact voltage, V
1000
–20 –10 0
–4 14 32
10
50
AQZ204D
20
68
30 40 50 60
86 104 122 140
Ambient temperature, °C °F
–3–
–20 –10 0
–4 14 32
10
50
20
68
30 40 50 60
86 104 122 140
Ambient temperature, °C °F
ASCTB369E 201701-T
RT-3 Unit Relay/4-point Terminal (PA-N Relay type)
DIMENSIONS (mm inch)
1. External dimensions
7.62
.300
2. Schematic
Input terminal socket 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 socket portion
With cover removed
4
.157
5.5±0.6
.217±.024
13.8
.543
32±1
1.260±.039
Note: It is PA-N relay type.
Cannot be equipped with PhotoMOS Power
standard type relays. However, equipping with
voltage sensitive type of PhotoMOS Power type
is possible.
The polarities of the output terminal socket are
for the DC only type (equipped with AQZ10∗D)
±0.6
30
1.181±.024
3. Mounting hole pattern
2-4.3 dia. or M4
2-.169 dia. or M.157
General tolerance: ±0.3 ±.012
30±0.1
1.181±.004
–4–
ASCTB369E 201701-T
CAUTIONS FOR USE
1. Never install modules (relays) into
this product other than those
designated. Doing so will cause
malfunction, breakdown, and
breakdown of the connected product.
2. If a unit is dropped be sure to check
its external appearance and
characteristics before using it.
3. The operation and return voltage
values when equipped with PA-N
relays are based on the relay terminals
being face down. (RT-3 Unit relay (PAN type), 4-point Terminal)
4. Switching lifetime (PA-N relay)
This characteristic depends on the relay
and is effected by coil driving circuit, load
type, activation frequency, activation
phase, ambient conditions and other
factors.
Also, be especially careful of loads such
as those listed below.
1) When used for AC load-operating and
the operating phase is synchronous,
rocking and fusing can easily occur due
to contact shifting.
2) Frequent switching under load
condition
When high frequently switched under
load condition that can cause arc at the
contacts, nitrogen and oxygen in the air is
fused by the arc energy and HNO3 is
formed. This can corrode metal materials.
Three countermeasures for these are
listed here.
(1) Incorporate an arc-extinguishing
circuit.
(2) Lower the operating frequency
(3) Lower the ambient humidity
5. 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 gasoline,
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.
6. 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.
RT-3 UNIT RELAY
4-POINT TERMINAL
when equipped with AQZ10∗D (DC type).
Also, with the RT-3 Unit relay (PhotoMOS
Power type), be careful of the polarity on
the output side of the DC type (RT3SP1∗∗V for type equipped with AQZ102).
2) We recommend the use of wirepressed terminals for connection to the
terminal portion.
• Example of applicable wire-pressed
terminal
Company
Name
Part Name
Applicable wirepressed terminal
J.S.T. Mfg
Co., Ltd.
1.25 to C3A
0.25 to 1.65mm2
3) When the load is inductive, limit spike
voltages generated from the load to less
than the maximum load voltage.
Typical circuits are shown below.
(1) Add a clamp diode to the load.
Output terminals
(2) Pull the removal key up to remove the
module.
Load
(2) Add an R-C snubber to the load.
Output terminals
Load
or
DC only for AQZ10∗D
equipped type
(3) Slide the removal key off of the
module.
(3) Add a varistor between the output
terminals.
Output terminals
Load
or
DC only for AQZ10∗D
equipped type
7. Wiring and circuit configuration
1) Perform wiring according to the
internal schematic. Take care not to make
any mistakes.
In particular, with the RT-3 Unit relay (PAN relay type) and 4-point terminal, be
careful of the polarity on the output side
–1–
4) Even if spike voltages generated from
the load are limited by a clamp diode or
R-C snubber, inductances in long circuit
wires will still create spike voltages.
Keep wires as short as possible to
minimize inductance.
ASCTB371E 201701-T
CAUTIONS FOR USE
8. 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.
3) To remove the unit from the DIN rail,
use a flat head screwdriver to pull out the
DIN rail locking lever.
9. 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 carton
and case 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.
10. When equipped with PhotoMOS
Power voltage drive type [RT-3 Unit
relay (PA-N relay type), 4-point
Terminal]
Since the PhotoMOS Power voltage
sensitive type does not require the
current-controlling resistance on the input
side, it can be used together with PA-N
relays on RT-3 unit relay (PA-N relay
type).
When connecting PhotoMOS Power
voltage sensitive 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 vs ambient temperature
characteristics” in the precautions given
for use of 4-point terminals.
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.
TERMINAL BLOCK
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
• Applicable wire-pressed terminals (mm inch)
3 dia. min.
.118 dia. min.
5.8 max.
.228 max. 3 min.
.118 min.
5.8 max.
.228 max.
4
4.5 min.
.157 .177 min.
Company Name
J.S.T. Mfg Co., Ltd.
NICHIFU
Nippon Tanshi Co., Ltd.
4
4.5 min.
.157 .117 min.
Part Name
1.25 to C3A
1.25Y to 3N
VD1.25 to 3L
Part Name
1.25 to 3
1.25 to 3
R1.25 to 3
ACCESSORIES
Short circuit plate for RT-3 Unit relay
Use when you want to bridge terminals.
< With insulator >
< Without insulator >
AY3802
External dimensions (mm inch)
28.7
1.130
7.62±0.3
.300±.012
5.8±0.1
.228±.004
3.1±0.1
.122±.004
0.5
.020
AY3803
External dimensions (mm inch)
28.7
1.130
7.62±0.3
.300±.012
5.8±0.1
.228±.004
3.1±0.1
.122±.004
R
0.5
.020
R
17.8
.701
13.8
.543
+0
8−3
.315+0
−.118
28+0.5
−1
1.102+.020
−.039
General tolerance: ±0.5 ±.020
–2–
1.5 to 2.5
.059 to .098
17
.669
13
.512
26.5
1.043
General tolerance: ±0.5 ±.020
ASCTB371E 201701-T