REL-MR-...21
Miniature Relays With PDT for Loads up to 6 A
INTERFACE
Data Sheet
Description
With the REL-MR-...21 plug-in miniature relay, the high end
of the latest relay developments are made available to the
innovative PLC range. Despite its compact dimensions, the
device is rugged and equipped with features which are not
normally found in plug-in relays:
– 5 mm wide
– High level of operational safety
– Cadmium-free, environmentally friendly power contacts
up to 250 V AC/6 A
– Available with gold plating for low power switching
levels (mA) as an option
– 4 kV
rms
electrical isolation between input and output
– Safe isolation according to EN 50178
– High degree of protection, up to IP67 depending on the
type
The miniature relays are not just designed to be used as
components for the PLC range, but can also be used as
PCB relays in industrial products of any kind, such as:
– Interface technology, timer relays
– Measuring and control technology
– PLC and bus I/O modules
© PHOENIX CONTACT - 10/2005
Make sure you always use the latest documentation.
It can be downloaded at
www.download.phoenixcontact.com.
A conversion table is available on the Internet at
http://www.download.phoenixcontact.com/general/7000_en_00.pdf.
This data sheet is valid for the following products:
101810_01_en
PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany
Phone: +49 - 52 35 - 30 0 • Fax: +49 - 52 35 - 34 12 00 • www.phoenixcontact.com
www.phoenixcontact.com/salesnetwork
1
REL-MR-...21
Ordering Data
Plug-In Miniature Relays With Power Contact
Description
Plug-in miniature relays with power contact, 4.5 V DC input voltage
Plug-in miniature relays with power contact, 12 V DC input voltage
Plug-in miniature relays with power contact, 18 V DC input voltage
Plug-in miniature relays with power contact, 24 V DC input voltage
Plug-in miniature relays with power contact, 60 V DC input voltage
Type
REL-MR- 4,5DC/21
REL-MR- 12DC/21
REL-MR- 18DC/21
REL-MR- 24DC/21
REL-MR- 60DC/21
Order No.
29 61 36 7
29 61 15 0
29 61 38 3
29 61 10 5
29 61 11 8
Pcs./Pkt.
10
10
10
10
10
Plug-In Miniature Relays With Multi-Layer Contact
Description
Plug-in miniature relays with multi-layer contact, 4.5 V DC input voltage
Plug-in miniature relays with multi-layer contact, 12 V DC input voltage
Plug-in miniature relays with multi-layer contact, 18 V DC input voltage
Plug-in miniature relays with multi-layer contact, 24 V DC input voltage
Plug-in miniature relays with multi-layer contact, 60 V DC input voltage
Type
REL-MR- 4,5DC/21AU
REL-MR- 12DC/21AU
REL-MR- 18DC/21AU
REL-MR- 24DC/21AU
REL-MR- 60DC/21AU
Order No.
29 61 37 0
29 61 16 3
29 61 49 3
29 61 12 1
29 61 13 4
Pcs./Pkt.
10
10
10
10
10
Technical Data
Coil Side
Nominal input voltage U
N
Permissible range (with reference to U
N
)
Typical input current at U
N
Typical response time at U
N
Typical release time at U
N
Coil resistance at 20°C
38 mA
5 ms
2.5 ms
119
Ω
±10%
...4,5VDC...
4.5 V DC
...12VDC...
12 V DC
14 mA
5 ms
2.5 ms
848
Ω
±10%
...18VDC...
18 V DC
9 mA
5 ms
2.5 ms
1906
Ω
±10%
...24VDC...
24 V DC
7 mA
5 ms
2.5 ms
3390
Ω
±10%
...60VDC...
60 V DC
3 mA
5 ms
2.5 ms
20500
Ω
±15%
See "Permissible Operating Voltage Range" on page 4
Contact Side
Contact type
Contact material
Maximum switching voltage
Minimum switching voltage
Limiting continuous current
Maximum inrush current
Minimum switching current
Maximum shutdown power (ohmic load),
(see "Shutdown Power" on page 4)
24 V DC
48 V DC
60 V DC
110 V DC
220 V DC
250 V AC
Minimum switching power
1
REL-MR-...21
Single contact, 1 PDT
AgSnO
250 V AC/DC
12 V AC/DC
6A
On request
10 mA
140 W
20 W
18 W
23 W
40 W
1500 VA
120 mW
REL-MR-...21AU
Single contact, 1 PDT
Ag alloy, hard gold-plated
1
30 V AC/36 V DC
100 mV
50 mA
50 mA
1 mA
1.2 W
–
–
–
–
–
100
µW
(10 mA)
(140 W)
(20 W)
(18 W)
(23 W)
(40 W)
(1500 VA)
(120 mW)
(250 V AC/DC)
(12 V AC/DC)
(6 A)
If the specified maximum values are exceeded, the gold coating will be damaged. In subsequent operation, the maximum values given in brackets will
apply. This can then result in reduced service life compared to simple power contacts.
101810_01_en
PHOENIX CONTACT
2
REL-MR-...21
General Data
Test voltage: Winding/contact
Ambient operating temperature range
Nominal operating mode
Mechanical service life
Electrical service life
Standards/specifications
4 kV, 50 Hz, 1 minute
-40°C to +85°C
100% operating factor
2 x 10
7
cycles
See "Service Life Reduction Factor" on page 4
IEC 60255/DIN VDE 0435 (in relevant parts)
DIN EN 50178/VDE 0160 (in relevant parts)
EN 60730/DIN VDE 0631
IEC 60664/IEC 60064 A/DIN VDE 0110
Pollution degree 3, surge voltage category III,
DIN EN 50178/VDE 0160, increased isolation I/O
Approvals
Mounting position/mounting
1
F V A C
1
Any/can be mounted without spacing
Instead of
A
and
C
:
u
is also possible.
Dimensions
Pin Assignment
1 ,2
1
1 ,3
1 ,9
Figure 1
Dimensions (in mm)
A2 A1
Figure 2
12
11
14
Pin assignment (view of the connections)
101810_01_en
PHOENIX CONTACT
3
REL-MR-...21
Diagrams
Permissible Operating Voltage Range
Electrical Service Life
3
2.5
2
1.5
1
0.5
10
7
Coil voltage U/U
N
A
Cycles
10
6
C
B
A
10
5
B
0
10 20 30 40 50 60 70 80 90 100
Ambient operating temperature [°C]
10
4
1
2
4
3
5
Switching current [A]
6
101810A002
101810A001
A
B
Maximum permissible continuous voltage U
max
with
limiting continuous current on the contact side
Minimum permissible relay operate voltage U
op
following pre-excitation
A
B
C
250 V AC, ohmic load
250 V AC, cos
ϕ
= 0.4
24 V DC, ohmic load
Service Life Reduction Factor
(with varying cos
ϕ)
Shutdown Power
1.0
0.9
0.7
0.6
0.5
0.4
0.3
1.0
0.9
0.8
0.7
0.6
0.5
0.4
cos
ϕ
101810A004
10
Switching current [A]
Reduction factor
0.8
1
B
A
0.3
0.2
0.1
1
10
AC, ohmic load
DC, ohmic load
10
2
Switching voltage [V]
10
3
101810A003
A
B
© PHOENIX CONTACT 10/2005
101810_01_en
PHOENIX CONTACT
4
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