Since 1972
Protection Doesn't Cost ... It Pays ! .... Ancient Abyssinian Proverb

Protection for Your Automation Networks, Controllers, Data and Video Lines
Instrumentation, Automation, Process Control Protectors

Surge Transient Suppressors <> Lightning Arrestors <> RFI Interference Filters

RJ-11 / RJ-45 Controller Protector

Check these fine units....

RS-232 <> RJ-11; RJ-45
.....Pricing <> RJ11; RJ45
Ethernet
RS-232 <> DB9; DB15; DB25
......Pricing <> DB-9; DB-15; DB-25
RS-422; RS-485 <> DB-9; DB-25
RS-422; RS-485 <> RJ-11; RJ-45

Automation Power - Dual function Protector

Special Designs

We have provided standard and special design Protectors
for many Automation system Manufacturers,
Operating and Installation Companies.
Inquire

Shown Left

RS-232 Protector with Suppression elements in small shell
RS-485 multi-stage Suppressor with extensive RFI control
in large case. Units similar to RS-485 model have been designed and used widely in automation systems

Both systems are designed for Series / in-line installation

Hi Performance Controller, Sensor, Automation & Instrumentation Protection
RS232 <> RS422 <> RS485 <> RS530
LANS <> WANS <> Ethernet/ArcNet

Save $$ <> Eliminate Expensive downtime
Eliminate Surge / Transient Damage
Save irreplaceable controller data
Speed up system response

Net Work protection for ArcNet and Ethernet systems
BNC connectors

BNC-Net ....................................^$50

for Ethernet or ArcNet Systems
Lantastic, Lan & Peer-to-Peer Networks
Hi-Current, Hi-Speed suppression
External grounding needed

Go to ...... Order Desk

INDUSTRIAL GRADE RS-232 Data / Controller Protection Systems
DB-9 <> DB-15 <> DB-25
RS-422, RS-485 and Special Purpose Designs can be accommodated
Need a special design? We do specials...... Custom Designs

Industrial Grade, 2 Stage RS-232 protectors

15 V_(peak) Hi-Current Clamp
1 Pico-second Hi-Speed Response
Automatic Spike/Surge Reset
2nd Stage Ground Suppressor
External ground required
RS-422 & RS-485 designs available
Designs available for sensors, automation, instrumentation, acquisition and telecommunication applications

Description & Pricing <> DB9; DB15; DB25 RS-232 Protectors

Model #	Connector	Description	Price U.S.$
PDS-25SU	DB-25	All 25 pins protected	^$99
PDS-25-232S	DB-25	Pins 1 thru 8, 20 & 22 protected	60
PDS-25-RTS	DB-25	Pins 1, 2, 3 & 7 protected	50
PDS-15SU	DB-15	All 15 pins protected	80
PDS-9SU	DB-9	All 9 pins protected	60
PDS-9-RTS	DB-9	Pins 2, 3 & 5 protected	50

Description & Pricing <> DB9; DB15; DB25 RS-422/485 Protectors
Designed for 5Volt Signal Level

Model #	Connector	Description	Price U.S.$
PDS-25(422) (a,b)* PDS-25(485) (a,b)*	DB-25	*2 Pins / 1 pair (a,b) Protected**	^$44
PDS-25(422) (a,b) (c,d)* PDS-25(485) (a,b) (c,d)*	DB-25	*4 Pins / 2 pair (a,b) (c,d) Protected**	55
PDS-25(422) (a,b) (c,d) (e,f)* PDS-25(485) (a,b) (c,d) (e,f)*	DB-25	*6 Pins / 3 pair (a,b) (c,d) (e,f) Protected**	66
PDS-25(422) (a,b) (c,d) (e,f) (g,h)* PDS-25(485) (a,b) (c,d) (e,f) (g,h)*	DB-25	*8 Pins / 4 pair (a,b) (c,d) (e,f) (g,h) Protected**	78
PDS-9(422) (a,b)* PDS-9(485) (a,b)*	DB-9	*2 Pins / 1 pair (a,b) Protected**	44
PDS-9(422) (a,b) (c,d)* PDS-9(485) (a,b) (c,d)*	DB-9	*4 Pins / 2 pair (a,b) (c,d) Protected**	55
PDS-9(422) (a,b) (c,d) (e,f)* PDS-9(485) (a,b) (c,d) (e,f)*	DB-9	*6 Pins / 3 pair (a,b) (c,d) (e,f) Protected**	66
PDS-9(422) (a,b) (c,d) (e,f) (g,h)* PDS-9(485) (a,b) (c,d) (e,f) (g,h)*	DB-9	*8 Pins / 4 pair (a,b) (c,d) (e,f) (g,h) Protected**	78

* Note: (a,b) (c,d) (e,f) (g,h) are pin-pair used for your particular network. Please specify

Go to ...... Order Desk

Go to ...... RS232 / RS422 / RS485 with RJ-11 & RJ-45 Connectors

NOTE : DB-9, DB-15 and DB-25 Protectors can be configured for any voltage on any pin

Also available: DB-15HD (DB15HD) High Density

NOTE: RS-232, RS-422, RS-485, or any other signal configuration,
can be supplied with screw terminals or wired in connections

View a few of the many configurations we have designed

<> INDUSTRIAL GRADE RS-232 Data Line Protection Systems
RJ11 <> RJ45

RS-422, RS-485 and Special Purpose Designs can be accommodated

Have a unique problem? We can solve it ! ...... Custom Designs

Industrial Grade Network Data protection
modular RJ-11 or RJ-45 plug

15 Volt Clamp supports all RS-232 systems
Hi-Current, Hi-Speed 1 Pico-second Suppressor
Semi-conductor reliability and dependability
Automatic self-reset design
External ground required
Designs available for sensors, automation, instrumentation, acquisition and telecommunication applications

Check out Multiple Circuit configurations

Description & Pricing <> RJ11 & RJ45 RS-232 Protectors

Model #	Connector	Description	Price U.S.$
PDS-11SU	RJ-11	Pins 3 & 4 protected	^$24
PDS-14SU	RJ-14	Pins 2, 3, 4 and 5 protected	40
PDS-12SU	RJ-12	All 6 pins protected	50
PDS-31X/SU	RJ-31X	All 6 pins protected	50
PDS-45SU	RJ-45	All 8 pins protected	62

Go to ...... Order Desk

Go to ...... RS-232 / RS-422 / RS-485 with DB-9 & DB-25 Connectors

Power and Automation Protector

Model P&A-31

Designs available
for Screw Terminals
or other connectors.
Contact factory

Now ... we have combined the best to bring you ...
Power & Automation Protection .... ideal for
Home or Office Automation Installations
Remote Monitor / Sensor Protection
Industrial Telemetry monitor
Commercial Controller systems

High Profile Suppressor Protection
Convenient - Plugs directly into Wall Electrical Socket
Power - 58,500 Surge Amp; 1 pico-second response
RS-232, RS-485 or other controller / network cable configuration
Price based upon 2 conductors plus ground
Contact factory for additional conductors

Model P&A-31 ....................................... U.S. ^$ 76
Model P&A-32 (2 AC Sockets).............. U.S. ^$ 86
Specify RJ-11 or RJ-45, pins used and application voltage

Go to ...... Order Desk

CONTROLLER PROTECTION:
Controllers are often neglected when system protection is designed.
Not only AC Power, but Signal and Control lines often suffer spike & surge damage
Consult us to help specify correct protection levels for your controller installation.
Protectors can be designed with wire leads, screw terminals or commercial connectors.

View designs with screw terminal connection
AC or DC Protection, at virtually any voltage, can be engineered.
Our Wire-in and Severe Duty units are widely used for standard AC voltages

Need Rack Mounted Protection ? ? We build 'em ! ! Check us out

Contact us ..................
for any unusual automation, controller or instrumentation installation problems
- we've probably solved similar difficulties before

View a few of the many configurations we have designed

We have Video protection for your
Automation, Instrumentation and Process Control Installations

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STORM WARNING !!

Surges, Spikes and Interference Damage
play no Favorites ! !

Studies Show ...................

Winter Storms Cause More
Wild Power, phone line outages, surges, spikes and interference
than Summer Storms

On the other hand, There are more Summer Storms

Winter Storm Spherics cause up to 50% as much damage as Summer Lightning Storms

On the other hand, WHY SUFFER ANY STORM DAMAGE ?

Now is the Best Time to Protect YOUR Valuable Equipment

Discover the Security offered by . . . . .
Electronic Specialists Professionally Engineered products for .....
. . . . your factory computerized production equipment and automated machinery
. . . . office computers, internet, network, intranet, communication and sound systems
. . . . your home computer, modem, phones and entertainment center

Visit our other great Equipment Protection Departments........
(Check the many categories in TABLE BELOW)
Discover High Performance protection solutions for your factory / office / home

Oh Yeah ! Don't forget to check out our FREE stuff

Ferroresonant Voltage Regulators Precision Variac Voltage Regulators ....... Stepper Motor Voltage Regulators	Dial Up Modem Speed-up & Telecommunications Protection Systems RJ-11, RJ11, RJ-21, RJ21, RJ-45, RJ45 Screw Terminals <> Wire-In <> DSL	Cable Modems )x4a( Speed-up, Isolation, Intermittent Cable Sync & Protectors Systems
Voltage Regulation - extends UPS operating Voltage Range AC Power Protection ...... Discussion & Over View	Software .... Engineering, Photography, Utilities Ultra High Current Source Regulated High Current Source	Networks, Data Line , Controller Protection RS-232, RS232, RS-422, RS422, RS-485, RS485 DB-9, DB9, DB-15, DB15, DB-25, DB25, Wire-in RJ-11, RJ11, RJ-45, RJ45, 10Base-T, 100Base-T Automation, Instrumentation Protectors
AC Power Line Protection 220-250 Volts ...... Commercial ... Industrial and .. Laboratory & Basic Grades NEMA 6-15, 615, 6-20, 620	Multiple circuit Relay Rack Mount Modem / Phone / Telco Protection	Networks, Data Line, Controller Banks Relay Rack Mount--Multiple Line Systems Process Control and Automation
Direct Plug AC Power Protection with built in Modem Protector	Dual Function - Direct Plug AC Power and Modem Protectors	Dual Function - Direct Plug AC Power and Network Protectors
AC Power Line Protection 120 Volts ...... Commercial ... Industrial, .. Laboratory & Basic Grades International too ! NEMA 5-15, 515, 5-20, 520	Phone System Protection and Interference Control Modular plugs, sockets RJ-11, RJ11, RJ-21, RJ21, RJ-45, RJ45	Audio-Video System Protection Cameras, Monitors, Displays, Amplifiers 50 / 75 ohm, RG-6, RG6, RG-58, RG58, RG-59 RG59, RG-62, RG62, RCA, PL-259, BNC, UHF
Wire-in AC Power Line Filter-Suppressor Wire Leads <> Screw Terminals Solder Lugs <> Push-on Tabs Retrofit and OEM applications	DIN RAIL Mount Modem - Phone Line Protector NetWorks Protector RJ-11, RJ11, RJ-21, RJ21, RJ-45, RJ45 DB-9, DB9, DB-15, DB15, DB-25, DB25 <>Screw Terminals <> Wire-In	Video <> Monitors & Displays <> Surveillance Video Interference Choke
Extreme Duty Motor and Controller Suppressors <> single phase <> 2-phase <> 3-phase	Twist-Lock^{® } Filter-Suppressors for NEMA L5-15, L5-20, L5-30, L515, L520, L530 L6-15, L6-20, L6-30, L615, L620, L630 L10-, L11-, L14-, L15-, 15, 20, 30 Twist-Lock is a registered trademark of Hubbell Incorporated	Relay Rack Mount, Multiple Circuit Video Protectors
Variable Voltage ....... Regulators ....... Isolation Transformers ....... Variacs ....... 400 Hz Variacs	Industrial & Copier Hi-Current Filter-Suppressors AC Hi Power Protection NEMA 14-20, 1420, 14-30, 1430, 14-50, 1450	Cable Modem <> Speed-up, Isolation & Protection System
Ground Loop Control ...... Voltage Regulators ...... Isolation Transformers ...... Cable TV / Cable Modem Isolators	Application Notes ...... Dozens of Practical Money Saving Tips	Cable Isolators Audio/Video Ground Loop Eliminator <> F-connector <> BNC-Video Guard
Isolation Devices ....... Transformers ....... Isolators-Filters	Pneumatic Interrupters * Power Shutdown Pressure <> Vacuum Switches	Surveillance <> Security Monitors / Displays / Video Protectors
New ! ! AC Power Line Interrupters Power Shut Down	Power Transformers ...... Regulators ...... Isolation ...... Autotransformer	Power Conditioners ...... Regulators ...... Isolation Transformers
New ! ! AC Power Line ..... Voltage Converters ,.... Voltage Converter Regulators ..... Voltage Converter Plug Adapter Strips ..... Universal AC Plug Adapters	Travel Adapters .... Phone RJ-11 Adapters .... AC Power Plug Adapter Strips .... AC Power Plug Adapters	Lap Tops ..... Laptop Phone Line Protector ..... Laptop AC Power Protector
Variable / Adjustable Transformers ....... Variacs ....... 3-Phase Variable Transformers ....... 400 Hz Variacs ....... 400 / 60 / 50Hz Variable Transformers ....... Stepper Motor Voltage Regulators	View Custom Design Transformers Ultra High Current Source Regulated High Current Source	Application Guide Cross Reference - - Locate Your Problem - - - - - Find a Fix !! We Now Offer Software
NEW ! ! ....... Rotary Converters ....... Frequency Converters	*Satellite Protection Systems & Power Supplies Industrial * Commercial**	Complete Subject and Product Listing
SureTest Electrical Circuit Analyzer <> Harmonics <> Ground Voltage & Noise <> Load Voltage Drop <> Ground Impedance	Can't Find What You Need ? Look Here ! or Check our Search Engine Catalog Sheets - ........ Down Load Here	Why the Professionals buy Electronic Specialists Protection Products
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Frequently Asked Questions <> with dozens of Answers		Check our Search Engine

Electronic Specialists regularly supplies Regulation, Suppression and Protection Products
for 100, 110, 115, 117, 120, 125/250, 120/208, 220/380, 277/480 Volts
single, dual and 3-phase systems

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Protection for Your Automation Networks, Controllers, Data and Video Lines Instrumentation, Automation, Process Control Protectors

Surge Transient Suppressors <> Lightning Arrestors <> RFI Interference Filters

Net Work protection for ArcNet and Ethernet systems BNC connectors

INDUSTRIAL GRADE RS-232 Data / Controller Protection Systems DB-9 <> DB-15 <> DB-25 RS-422, RS-485 and Special Purpose Designs can be accommodated Need a special design? We do specials...... Custom Designs

<> INDUSTRIAL GRADE RS-232 Data Line Protection Systems RJ11 <> RJ45 RS-422, RS-485 and Special Purpose Designs can be accommodated

Power and Automation Protector

Protection for Your Automation Networks, Controllers, Data and Video Lines
Instrumentation, Automation, Process Control Protectors

Net Work protection for ArcNet and Ethernet systems
BNC connectors

INDUSTRIAL GRADE RS-232 Data / Controller Protection Systems
DB-9 <> DB-15 <> DB-25
RS-422, RS-485 and Special Purpose Designs can be accommodated
Need a special design? We do specials...... Custom Designs

<> INDUSTRIAL GRADE RS-232 Data Line Protection Systems
RJ11 <> RJ45

RS-422, RS-485 and Special Purpose Designs can be accommodated