Phoenix Contact page 1 of 4
Universal Modular System
The 38 mm (1.496 in.) wide PR3 relay base range is
a modular system consisting of PR3-B... relay bases,
robust REL-OR... electromechanical octal relays with
DPDT and 3PDT contacts, and a range of practical
accessories. These include:
– Plug-in input/interference suppression modules
– Relay retaining bracket
– Continuous jumpers
Depending on the application, complete coupling
relays can be created, which are optimized in terms of
cost and function.
Base Versions
PR3-B... relay bases are available in two versions
with screw connections - the PR3-BSC1/2x21 type for
octal relays with DPDT contacts and the
PR3-BSC1/3x21 for octal relays with 3PDT contacts.
Both bases can be extended in terms of functions
through the use of keyed plug-in modules with various
display and interference suppression elements.
Robust Octal Relays
Octal relays have been used in many sectors of
industry for years due to their robust structure, with an
8 or 11-pos. circular connector. They are ideal for use
in applications where a solid mechanical structure,
powerful power contacts, and easy, error-free
operation of a miniature product are important and
where global availability is required. The Phoenix
Contact REL/OR... series includes the following
versions:
– With two 10 A PDT contacts
– With three 10 A PDT contacts
– In all major AC and DC coil voltages
Considerably more expensive miniature contactors
can thus be replaced cost-effectively in many
applications without adversely affecting machine or
system operation. All octal relays have the following
standard features:
– Manual test key (AC coil = red key, DC coil = blue
key)
– Mechanical switch setting display
– Keying to prevent connection errors
11
11
22
22
b
a
c
PR3 Relay Base for:
– Octal Relays With DPDT or 3PDT Contacts
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
PR3-BSC1/2x21 PR3-BSC1/3x21
Nominal voltage U
1
)
Nominal current I
1
)
400 V AC
10 A
400 V AC
10 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:
– EL3-M52
Depth (b)
Width (c)
84 mm (3.307 in.)
75 mm (2.953 in.)
38 mm (1.496 in.)
86 mm (3.386 in.)
75 mm (2.953 in.)
38 mm (1.496 in.)
Ambient temperature -40°C...+85°C
(-40°F...+185°F)
-40°C...+85°C
(-40°F...+185°F)
1
) The maximum electrical data is relay dependent.
2
) Details on request.
M 3 M 3
10 mm (0.39 in.)
10 mm (0.39 in.)
