Phoenix Contact page 1 of 5
Universal Modular System
The 15 mm (0.591 in.) wide PR1 rela y base range is
a modular system consisting of PR1-B... relay bases,
compact electromechanical relays with SPDT or DPDT
contacts, solid-state relays, and a comprehensive
range of accessories. These include:
– Plug-in input/interference suppression modules
– Relay retaining bracket with labeling field and eject
function
– Labels
– Continuous jumpers
Depending on the application, complete coupling
rela ys can be created, which are optimized in terms of
cost, function, and service life.
Base Versions
The relay bases are available in two versions with
screw connections
3
)
- the flat 2/2 lev el PR1-BSC2 and
the "logical" 1/3 level PR1-BSC3. The second version
has coil and contact connections that are located
opposite one another and thus meets the requirements
of modern control cabinet concepts with clear isolation
of control signals and load. Both bases can be
extended in terms of functions through the use of keyed
plug-in modules with various display and interference
suppression elements.
Cost-Effective Electromechanical Relays
Powerful and cost-effective REL-MR
electromechanical miniature power relays are
recommended for standard applications. They are
available in the following versions:
– With one 16 A PDT contact
– With two 8 A PDT contacts
– In all popular AC and DC coil voltages
– In power contact and gold contact versions
Additional suitable standard and special relays
(e.g., for lamp loads) are available on request
4
)
.
Alternative: Wear-Resistant Solid-State Relays
In critical applications, electromechanical relays
reach their maximum service life relativ ely quickly. This
is why, as an alternative, PR1-B... bases can be fitted
with OPT wear-resistant solid-state relays with the
same structure. These rela ys provide optimum service
life for applications with a high switching frequency
and/or for switching high DC loads.
11
11
22
22
b
a
c
PR1 Relay Base for:
– Relays With SPDT or DPDT Contacts
– Solid-State Relays With the Same Structure
Phoenix Contact GmbH & Co. KG • 32825 Blomberg, Germany
Phone +49 - 52 35 - 30 0 • Fax +49 - 52 35 - 34 12 00 • www.phoenixcontact.com
Local Contact: www.phoenixcontact.com/salesnetwork
12
PR1-BSC2... PR1-BSC3...
Nominal voltage U
1
)
Nominal current I
1
)300 V AC
12 A 300 V AC
12 A
Conductor
cross section
– Solid
– Flexible
American Wire
Gauge
2 x 2.5 mm
2
2 x 2.5 mm
2
2 x 14 AWG
2 x 2.5 mm
2
2 x 2.5 mm
2
2 x 14 AWG
Connection type
Approvals
2
)
C A C A
Stripping length
Height (a) with
retaining bracket:
– EL1-P16
– EL1-P25
Depth (b)
Width (c)
63 mm (2.480 in.)
71 mm (2.795 in.)
75 mm (2.953 in.)
15.5 mm (0.610 in.)
66 mm (2.598 in.)
79 mm (3.110 in.)
78.5 mm (3.091 in.)
15.5 mm (0.610 in.)
Ambient temperature -25°C...+85°C
(-13°F...+185°F) -25°C...+85°C
(-13°F...+185°F)
1
) The maximum electrical data is relay dependent.
2
) Details on request.
3
) Spring-cage connections on request.
4
) See INTERFACE catalog.
M 3 M 3
8 mm (0.31 in.) 8 mm (0.31 in.)
Phoenix Contact page 2 of 5
Description
Type Order No.
Pcs.
Pkt.
PR1 relay base
, for miniature power relays
or miniature switching relays with SPDT or
DPDT contacts or solid-state relays with a
similar structure, 2/2 level version, screw
connections, optional connection of input/
interference suppression module, for
mounting on
33
33
, safe isolation of I/Os,
including MP1 markers, 10 pcs. per pack
PR1-BSC2/2x21 28 33 51 8
10
PR1 relay base
, for miniature power relays
or miniature switching relays with SPDT or
DPDT contacts or solid-state relays with a
similar structure, 1/3 level version, screw
connections, optional connection of input/
interference suppression module, for
mounting on
33
33
, safe isolation of I/Os,
including MP1 markers, 10 pcs. per pack
PR1-BSC3/2x21 28 33 52 1
10
Relay retaining brac ket
, with eject function
and integrated device marking area
(7.5 x 15 mm [0.295 x 0.591 in.]), suitable f or
PR1 relay base:
–For 16 mm (0.630 in.) high miniature
power relays and solid-state relays
1
)
–For 25 mm (0.984 in.) high miniature
switching relays
1
) and solid-state relays
1
)
EL1-P16
EL1-P25
28 33 54 7
28 33 55 0
10
10
Device marker
, 6 x 15 mm
(0.236 x 0.591 in.) marking area
MP1 28 33 63 1
10
Plug-in module,
for mounting on PR1 and
PR2, with free-wheeling diode and yellow
LED, polarity:
A1 +, A2 –
Input voltage:
– 12 - 24 V DC ±20%
– 48 - 60 V DC ±20%
– 110 V DC ±20%
LDP-12-24DC
LDP-48-60DC
LDP-110DC
28 33 65 7
28 33 66 0
28 33 67 3
10
10
10
Plug-in module,
for mounting on PR1 and
PR2, with free-wheeling diode and yellow
LED, polarity:
A1 –, A2 +
(Japanese
standard)
Input voltage:
– 12 -24 V DC ±20%
– 48 - 60 V DC ±20%
– 110 V DC ±20%
LDM-12-24DC
LDM-48-60DC
LDM-110DC
28 33 68 6
28 33 69 9
28 33 70 9
10
10
10
Plug-in module,
for mounting on PR1 and
PR2, with varistor and yellow LED, input
voltage:
– 12 - 24 V AC/DC ±20%
– 48 - 60 V AC/DC ±20%
– 120 - 230 V AC/110 V DC ±20%
LV-12-24UC
(30 V varistor)
LV-48-60UC
(75 V varistor)
LV-120-230AC/110 DC
(275 V varistor)
28 33 71 2
28 33 72 5
28 33 73 8
10
10
10
Plug-in module,
for mounting on PR1 and
PR2, with varistor
Input voltage:
– 12 - 24 V AC/DC ±20%
– 48 - 60 V AC/DC ±20%
– 120 - 230 V AC/DC ±20%
V-12-24UC
(30 V varistor)
V-48-60UC
(75 V varistor)
V-120-230UC
(275 V varistor)
28 33 86 4
28 33 87 7
28 33 88 0
10
10
10
Plug-in module,
for mounting on PR1 and
PR2, with RC element
Input voltage:
– 12 - 24 V AC/DC ±20%
– 48 - 60 V AC/DC ±20%
– 120 - 230 V AC/DC ±20%
RC-12-24UC
(220 nF/100
Ω
)
RC-48-60UC
(220 nF/220
Ω
)
RC-120-230UC
(100 nF/470
Ω
)
28 33 74 1
28 33 75 4
28 33 76 7
10
10
10
Wire jumper
, 50-pos., can be separated,
maximum jumpering distance of 60 mm
(2.36 in.), 0.5 mm
2
(20 AWG), insulation:
– Blue
– Black
– Gray
DB 50-90 BU
DB 50-90 BK
DB 50-90 GY
28 21 18 0
28 20 91 6
28 20 92 9
1
1
1
1
) See INTERFACE catalog
- A 2 + A 1
- A 1+ A 2
A 2 A 1
A 2 A 1
A 2 A 1
PR1 Relay Base for Miniature Power Relays With SPDT or DPDT Contacts
Phoenix Contact page 3 of 5
Description
Type Order No.
Pcs.
Pkt.
Plug-in miniature power relays,
with power contact, SPDT contact
,
suitable for PR1-B... base
Coil voltage:
– 12 V DC
– 24 V DC
– 60 V DC
– 110 V DC
– 24 V AC
– 120 V AC
– 230 V AC
As above, but with solid gold coating,
SPDT contact
Coil voltage:
– 12 V DC
– 24 V DC
– 110 V DC
– 24 V AC
– 120 V AC
– 230 V AC
REL-MR- 12DC/21HC
REL-MR- 24DC/21HC
REL-MR- 60DC/21HC
REL-MR-110DC/21HC
REL-MR- 24AC/21HC
REL-MR-120AC/21HC
REL-MR-230AC/21HC
REL-MR- 12DC/21HC AU
REL-MR- 24DC/21HC AU
REL-MR-110DC/21HC AU
REL-MR- 24AC/21HC AU
REL-MR-120AC/21HC AU
REL-MR-230AC/21HC AU
29 61 30 9
29 61 31 2
29 61 32 5
29 61 33 8
29 61 40 6
29 61 41 9
29 61 42 2
29 61 53 2
29 61 54 5
29 61 56 1
29 61 50 3
29 61 51 6
29 61 52 9
10
10
10
10
10
10
10
10
10
10
10
10
10
Technical Data
Coil Side DC Coils
Nominal input voltage U
N
Permissible range
Typical input current at U
N
Typical response time at U
N
Typical release time at U
N
DC coil resistance at 20°C (68°F)
12 V DC 24 V DC 60 V DC 110 V DC
See diagram on page 5
33 mA 17 mA 8.2 mA 4.1 mA
7 ms 7 ms 7 ms 7 ms
3 ms 3 ms 3 ms 3 ms
360
Ω
±
10% 1440
Ω
±
10% 7340
Ω
−
15+35% 26600
Ω
−
15+35%
Coil Side AC Coils (50 Hz/60 Hz)
Nominal input voltage U
N
Permissible range (with reference to U
N
)
Typical input current at U
N
(50 Hz/60 Hz)
Typical response time at U
N
(depending on phase relation)
Typical release time at U
N
(depending on phase relation)
DC coil resistance at 20°C (68°F)
24 V AC 120 V AC 230 V AC
See diagram on page 5
32 mA/24 mA 7 mA/5 mA 3 mA/2.5 mA
3 - 12 ms 3 - 12 ms 3 - 12 ms
2 - 9 ms 2 - 9 ms 2 - 9 ms
350
Ω
±
10% 8100
Ω
±
15% 32500
Ω
±
15%
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)
Minimum switching power
250 V AC
REL-MR...21HC REL-MR...21HCAU
Single contact, 1 Form C contact Single contact, 1 Form C contact
AgNi AgNi + 5
µ
Au
2
)
250 V AC/DC 30 V A C/36 V DC(250 V AC/DC)
12 V 100 mV (12 V)
16 A 50 mA (16 A)
30 A (300 ms) 50 mA (30 A, 300 ms)
100 mA 1 mA (100 mA)
4000 V A – (4000 V A)
For additional data, see diagram on page 5
1.2 W 100
µ
W(1.2 W)
General Data
Test voltage: Winding/contact
Ambient temperature
Nominal operating mode
Mechanical service life
Electrical service life
Standards/specifications
Approvals
Mounting position/mounting
5 kV, 50 Hz, 1 minute
-40°C to +85°C (-40°F to +185°F)
100% ED
3 x 10
7
cycles
See diagram on page 5
IEC 60 255/DIN VDE 0435 (in relevant parts), DIN EN 50 178/
VDE 0160 (in relevant parts), EN 60 730/DIN VDE 0631,
IEC 60 664/IEC 60 664 A/DIN VDE 0110, degree of pollution 3,
Surge Voltage Category III
UL; CSA; VDE
Any/can be mounted without spacing
1
)Alternative: For REL/KSR miniature s witching relay, OPT solid-state
relay, see INTERFACE catalog.
2)
If the specified maximum values are e xceeded, 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,
similar to simple power contacts.
12 11 14
A2
A1
Pin assignment:
view of the
connections.
REL-MR Plug-In Miniature P ower Rela ys
1
) With SPDT Contact, Suitable for PR1
Relay Base
Phoenix Contact page 4 of 5
Description
Type Order No.
Pcs.
Pkt.
Plug-in miniature power relays,
with power contacts, DPDT contacts
Coil voltage:
– 12 V DC
– 24 V DC
– 60 V DC
– 110 V DC
– 24 V AC
– 120 V AC
– 230 V AC
As above, but with solid gold coating,
DPDT contacts
Coil voltage:
– 12 V DC
– 24 V DC
– 60 V DC
– 110 V DC
– 24 V AC
– 120 V AC
– 230 V AC
REL-MR- 12DC/21-21
REL-MR- 24DC/21-21
REL-MR- 60DC/21-21
REL-MR-110DC/21-21
REL-MR- 24AC/21-21
REL-MR-120AC/21-21
REL-MR-230AC/21-21
REL-MR- 12DC/21-21 AU
REL-MR- 24DC/21-21 AU
REL-MR- 60DC/21-21 AU
REL-MR-110DC/21-21 AU
REL-MR- 24AC/21-21 AU
REL-MR-120AC/21-21 AU
REL-MR-230AC/21-21 AU
29 61 25 7
29 61 19 2
29 61 27 3
29 61 20 2
29 61 43 5
29 61 44 8
29 61 45 1
29 61 29 9
29 61 21 5
29 61 28 6
29 61 22 8
29 61 46 4
29 61 47 7
29 61 48 0
10
10
10
10
10
10
10
10
10
10
10
10
10
10
Technical Data
Coil Side DC Coils
Nominal input voltage U
N
Permissible range
Typical input current at U
N
Typical response time at U
N
Typical release time at U
N
DC coil resistance at 20°C (68°F)
12 V DC 24 V DC 60 V DC 110 V DC
See diagram on page 5
33 mA 17 mA 8.2 mA 4.1 mA
7 ms 7 ms 7 ms 7 ms
3 ms 3 ms 3 ms 3 ms
360
Ω
±
10% 1440
Ω
±
10% 7340
Ω
−
15+35% 26600
Ω
-15+35%
Coil Side AC Coils (50 Hz/60 Hz)
Nominal input voltage U
N
Permissible range (with reference to U
N
)
Typical input current at U
N
(50 Hz/60 Hz)
Typical response time at U
N
(depending on phase relation)
Typical release time at U
N
(depending on phase relation)
DC coil resistance at 20°C (68°F)
24 V AC 120 V A C 230 V AC
See diagram on page 5
32 mA/24 mA 7 mA/5 mA 3 mA/2.5 mA
3 -12 ms 3 -12 ms 3 -12 ms
2 - 9 ms 2 - 9 ms 2 - 9 ms
350
Ω
±
10% 8100
Ω
±
15% 32500
Ω
±
15%
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)
Minimum switching power
250 V AC
REL-MR...21-21 REL-MR...21-21AU
Single contact, 2 Form C contacts Single contact, 2 Form C contacts
AgNi AgNi + 5
µ
Au
2
)
250 V AC/DC 30 V A C/36 V DC(250 V AC/DC)
5 V 100 mV (5 V)
8 A 50 mA (8 A)
15 A (300 ms) 50 mA (15 A, 300 ms)
10 mA 1 mA (10 mA)
2000 V A – (2000 V A)
For additional data, see diagram on page 5
50 mW 100
µ
W (50 mW)
General Data
Test voltage: Winding/contact
Contact/contact
Ambient temperature
Nominal operating mode
Mechanical service life
Electrical service life
Standards/specifications
Approvals
Mounting position/mounting
5 kV, 50 Hz, 1 minute
2.5 kV, 50 Hz, 1 minute
-40°C to +85°C (-40°F to +185°F)
100% ED
3 x 10
7
cycles
See diagram on page 5
IEC 60 255/DIN VDE 0435 (in relevant parts), DIN EN 50 178/
VDE 0160 (in relevant parts), EN 60 730/DIN VDE 0631,
IEC 60 664/IEC 60 664 A/DIN VDE 0110, degree of pollution 3,
Surge Voltage Category III
UL; CSA; VDE
Any/can be mounted without spacing
1
) Alternative: For REL/KSR miniature switching relay, see
INTERFACE catalog.
2)
If the specified maximum values are e xceeded, 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,
similar to simple power contacts.
22 21 24
12 11 14
A2
A1
Pin assignment:
view of the
connections.
REL-MR Plug-In Miniature Power Relays
1
) With DPDT Contacts, Suitable for
PR1 Relay Base
Phoenix Contact page 5 of 5
0 , 6
0 , 8
1
1 , 2
1 , 4
1 , 6
1 , 8
2
2 , 2
2 , 4
2 , 6
2 , 8
0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0
TNR: 101596-00-GB 12/30/04 Phoenix Contact
Diagrams for REL-MR... Miniature Power Relays
Service life reduction factor
with varying cos ϕ
Operating voltage range
Tu = Tcoil Shutdown power
REL-MR...21-21... (DPDT Contacts)
REL-MR...21HC... (SPDT Contact)
1
Coil voltage U/UN
Ambient temperature [°C]
Electrical service life
0 , 1
0 , 2
0 , 3
0 , 5
1
2
4
6
1 0
2 0
10 20 30 50 70 100 300200
Switching current [A]
Switching voltage [V]
0 1 4 8 1 2 1 6
1 0
4
1 0
5
1 0
6
1 0
7
2 3 5 6 7 1 19 1 0 1 51 41 3
Cycles
Switching current [A]
Operating voltage range
Tu = Tcoil Electrical service lifeShutdown power
1 0 , 9
0 , 3
0 , 4
0 , 5
0 , 6
0 , 7
0 , 8
0 , 9
1
0 , 8 0 , 7 0 , 6 0 , 5 0 , 4 0 , 3 0 , 2
Reduction factor
cos ϕ
0 , 6
0 , 8
1
1 , 2
1 , 4
1 , 6
1 , 8
2
2 , 2
2 , 4
2 , 6
2 , 8
0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0
Coil voltage U/UN
Ambient temperature [°C]
0 , 1
0 , 2
0 , 3
0 , 5
1
2
4
6
1 0
2 0
10 20 30 50 70 100 300200
Switching current [A]
Switching voltage [V]
0 1 4 8 1 2 1 6
1 0
4
1 0
5
1 0
6
1 0
7
2 3 5 6 7 1 19 1 0 1 51 41 3
Cycles
Switching current [A]
Service life reduction factor
with varying cos ϕ
1 0 , 9
0 , 3
0 , 4
0 , 5
0 , 6
0 , 7
0 , 8
0 , 9
1
0 , 8 0 , 7 0 , 6 0 , 5 0 , 4 0 , 3 0 , 2
Reduction factor
cos ϕ
1 DC coils
2 AC coils
2
1
2
1 AC, ohmic load
2 DC, ohmic load
3 DC, L/R = 40 ms
1 250 V AC, ohmic load (DC coils)
2 250 V AC, ohmic load (AC coils)
1
2
2
31
1 DC coils
2 AC coils 1 AC, ohmic load
2 DC, ohmic load, contacts in series
3 DC, ohmic load
4 DC, L/R = 40 ms
1 250 V AC, ohmic load (DC coils)
2 250 V AC, ohmic load (AC coils)
1
2
1
2
1
2
23 1
4
