The Network of Networks
3M™ Single-Pair Protector Modules SOR PU
3M offers a full range of solutions for network protection that are designed to protect
personnel and equipment. They are designed to meet major international standards
and service provider’s specifications.
3M™ Single-Pair Protector Modules SOR PU are designed for use with:
3M™ High Density Cross-Connect Modules STG2000 and STR Series
3M™ Over Voltage Protector SOR PU 8
3M™ High Speed Cross-Connect Modules RCP2000
3M™ Terminal Blocks BRCP, BRCP-NC SP, Next Connect
While providing modular protection against high voltage surges and over currents
to individual copper pairs of most voice and data, fixed and wireless network
applications, SOR PU protectors maintain the density provided by the 3M blocks
and modules, making them very adaptable to congested main distribution frames
(MDF) in central offices as well as the confined spaces of remote terminals, shelters
or telecom closets in residential or corporate buildings.
3M™ Over Voltage and Over Current
Protector SOR PU 7
All SOR PU protectors include a 3-pole, non-radioactive gas discharge tube (GDT)
or surge arrester equipped with a fail-safe device. The common chamber 3-electrode
gas tube provides balanced protection. A surge voltage on either side of the circuit
causes the entire gas tube to ionize and provides a simultaneous path to ground
for both tip and ring. In case of a lasting surge, the fail-safe will melt and short
to ground.
The SOR PU protectors are available with and without a positive temperature
coefficient resistor (PTCR) current limiter which protects against low voltage sneak
currents. When the surge passes, the resistance will decrease with the temperature
3M™ Over Voltage Double GDT
Protector SOR PU 20
and the PTCR automatically resets.
Individual single-pair protector modules can be added during installation or removed
separately for replacement on faulty lines without disturbing adjacent working lines.
SOR PU protectors feature directioning so that they can be
mounted in only one direction.
3M™ Over Voltage Protector SOR PU 22
3M™ Single-Pair Protector Modules SOR PU Electrical Specifications
Gas Discharge Tube/GDT
DC spark over voltage
PTCR
100 V/s 180-300 V
Operating voltage
60 V DC
Insulation resistance
100 V DC > 1000 MΩ
Max operating voltage
(Vmax)
135 VAC
Impulse spark over voltage
line to ground
1 KV/µs < 900 V
Impulse discharge current one
line to ground
5 kA at 8/20 µs 10 times
Rated current at 25°C
108 mA
Impulse life
10/1000 µs, 100 A
300 times
Switching current
240 mA
AC discharge current
50 Hz 1s, 5 Ax25 times
Response time @ 1 Amp
rms
< 0.9 sec
Capacities
SOR PU 7/8 1MHz > 3 pF
SOR PU 20/22 1MHz > 1,5 pF
Max permissible
switching
Fail safe operation
AC 5A < 5 sec
Current at Vmax
3M™ Over Voltage Protector
SOR PU 8
3A AC
Materials
Casing: self extinguishable UL 94 V-O glass filled polycarbonate
Contacts: phosphor bronze with tin coating
PCB: FR4
3M™ Over Voltage and
Over Current Protector SOR PU 7
Dimensions
L1 Length
L2 Length
Width / W
Height / H
SOR PU 8
70.5 mm / 2.77 in.
45.7 mm / 1.80 in.
10 mm / 0.39 in.
14.4 mm / 0.56 in.
SOR PU 7
70.5 mm / 2.77 in.
45.7 mm / 1.80 in.
10 mm / 0.39 in.
14.4 mm / 0.56 in.
SOR PU 20
70.5 mm / 2.77 in.
45.7 mm / 1.80 in.
10 mm / 0.39 in.
14.4 mm / 0.56 in.
SOR PU 22
70.5 mm / 2.77 in.
45.7 mm / 1.80 in.
10 mm / 0.39 in.
14.4 mm / 0.56 in.
L1 length is the overall length of the protector module. L2 length protrudes over the IDC block.
3M™ Over Voltage Double GDT
Protector SOR PU 20
Environmental
Operating temperature range
-30°C to 65°C
Storage temperature range
-30°C to 65°C
Flammability rating
UL 94 V-0 materials used
RoHS: Compliant with EU RoHS Directive (2011/65/EU)
Compliant with EU RoHS Directive (2011/65/EU)
“RoHS 2011/65/EU” means that the product or part does not contain any of the substances in excess of
the maximum concentration values (“MCVs”) in EU RoHS Directive 2011/65/EU. The MCVs are by weight in
homogeneous materials. This information represents 3M’s knowledge and belief, which may be based in
whole or in part on information provided by third party suppliers to 3M.
Dimension example of a 3M™ Single-Pair
Protector Module SOR PU
3M™ Over Voltage Protector SOR PU 22
3M™ Single-Pair Protector Modules SOR PU Ordering Information
Model Number
Description
C233803A
Single-Pair Protection Module SOR PU 7 with 230V GDT and 2 PTCRs
3M ID
Minimum Order
IA340513653
1000
233808CA
233650CA
Single-Pair Protection Module SOR PU 8 with 230V GDT
IA340513661
1000
Single Protection Module SOR PU 22 with 1 x 230V GDT w/Fail-Safe
IA340500270
1000
233006CA
Double Protection Module SOR PU 20 with 2 x 230V GDT w/Fail-Safe
IA340535888
1000
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guaranteed. Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and liability associated with such use.
Any statements related to the product which are not contained in 3M’s current publications, or any contrary statements contained on your purchase order shall have no force or
effect unless expressly agreed upon, in writing, by an authorized officer of 3M.
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This product will be free from defects in material and manufacture for a period of 12 months from the time of purchase. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT
NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated
above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M
will not be liable for any loss or damage arising from this 3M product, whether indirect, special, incidental or consequential regardless of the legal theory asserted.
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