System Sensor PR-3 User Manual

YELLOW

BLUE

ORANGE

INSTALLATION INSTRUCTIONS

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+

–

+

Non-Power
Limited

Power
Limited

Blue Wire

Yellow Wire

Orange Wire

Red Wire

Black Wire

I56-2192-005

PR-2/PR-3
Multi-Voltage Relay

Specifications

Operating Voltage: 10 to 40 VDC

Operating Current: 30 mA max.

Operating Temperature Range: –40ºF to 158ºF (–40ºC to 70ºC)

Storage Temperature Range: –40ºF to 185ºF (–40ºC to 85ºC)

Humidity: 10 to 93% RH non-condensing

Wire Length: 8″ min. (203 mm)

Dimensions: 0.91″H x 1.65″W x 1.22″D

(23 mm H x 42 mm W x 31 mm D)

Accessories: PR-2: 5 wire nuts

PR-3: 7 wire nuts

One piece of double sided tape

One 11/4″ screw

Contact Ratings: 120 VAC 10A max. (resistive load)

120 VAC 7A max. (0.35 PF)

250 VAC 10A max. (resistive load)

30 VDC 10A max. (resistive load)

NOTICE: This manual should be left with the owner/user of this

equipment.

General Description

Model PR-2 and PR-3 are epoxy encapsulated single pull double throw

(SPDT) relays that are activated by 10 to 40 VDC. The PR-2 also uses a red

LED as a visible indication of relay coil energization. The PR-3 contains an

additional black and red wire used for redundant power input.

WIRE DEFINITIONS

RED POWER INPUT (+)

BLACK POWER INPUT (–)

BLUE RELAY - COMMON

YELLOW RELAY - NORMALLY CLOSED

ORANGE RELAY - NORMALLY OPEN

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: [phone]

www.systemsensor.com

Mounting

For ease of installation, the PR-2/PR-3 relays may be mounted in a vari­ety of ways. They can be attached within compatible equipment or in
a separate enclosure using a mounting screw. Double sided tape is also

provided for additional support.

C0208-01

Wiring

NOTE: All wiring must conform to applicable local codes, ordinances,

and regulations.

The PR-2/PR-3 connections are shown on the label on the side of the relay.

Using the enclosed wire nuts, secure the electrical connections appropriate

to the application. Provisions must be taken to separate power limited

and non-power limited wiring per National Electrical Code requirements.
Field installable wiring connected to the product must have a minimum

1/4 inch spacing between the power limited and non-power limited wire.

Three-Year Limited Warranty

System Sensor warrants its enclosed relay to be free from defects in materials and
workmanship under normal use and service for a period of three years from date of
manufacture. System Sensor makes no other express warranty for this relay. No agent,
representative, dealer, or employee of the Company has the authority to increase or
alter the obligations or limitations of this Warranty. The Company’s obligation of this
Warranty shall be limited to the repair or replacement of any part of the relay which is
found to be defective in materials or workmanship under normal use and service dur­ing the three year period commencing with the date of manufacture. After phoning
System Sensor’s toll free number 800-SENSOR2 (736-7672) for a Return Authorization
number, send defective units postage prepaid to: System Sensor, Repair Department,
RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please include a note

D140-03-00 1 I56-2192-005

describing the malfunction and suspected cause of failure. The Company shall not
be obligated to repair or replace units which are found to be defective because of
damage, unreasonable use, modifications, or alterations occurring after the date of
manufacture. In no case shall the Company be liable for any consequential or inci­dental damages for breach of this or any other Warranty, expressed or implied what­soever, even if the loss or damage is caused by the Company’s negligence or fault.
Some states do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitation or exclusion may not apply to you. This Warranty
gives you specific legal rights, and you may also have other rights which vary from
state to state.

C0898-00

2006 System Sensor

©