Intelligent
Relay and Isolator
Bases
A Division of Pittway
3825 Ohio Avenue, St. Charles, IL 60174
1-800-SENSOR2 (736-7672), Fax 630-377-6495
http://www.systemsensor.com
Models Available
B224RB Relay Base
B524RB Relay Base
B224BI Isolator Base
B524BI Isolator Base
Features
•
•
•
•
•
Easy plug-in of detector heads to bases
Terminal block wiring
Rugged industrial construction
Designed for direct surface or electrical box mounting
Relay bases provide:
–Form C contact for control of auxiliary functions
–Activation from the sensor head to remote
annunciator output
–Suitability for patient room annunciation, elevator
recall, and pilot duty on fan shutdown and damper
control
• Isolator bases provide:
–Isolation of short circuit
–Automatic restore when short circuit is corrected
–Suitability for NFPA 72, Style 7 applications
The System Sensor
intelligent relay and isolator bases
are designed for use with 200 and 500 Series plug-in
detectors. The complete line of relay and isolator bases is
designed for reduced installation costs and optimum
performance.
Specifications
Diameter:
Height
B224RB/BI:
B524RB/BI:
Weight:
Mounting:
6.2″ (157 mm)
1.2″ (31 mm)
1.4″ (36 mm)
5.76 oz.
4″ square box with or without
plaster ring, or 3
1
/
2
″
or 4″
octagonal box, min. depth 1.5″
(13 mm)
12–22 AWG, twisted pair
recommended
Operating
Temperature Range:
Operating
Humidity Range:
32° F to 120° F (0° C to 49° C)
10% to 93% relative humidity
(noncondensing)
Wiring Gauge:
APPROVED
© System Sensor 4/97
This document is not intended to be used for installation purposes.
A05-235-01
Electrical Ratings
Operating Voltage:
Standby Ratings:
Set Time:
Reset Time:
15 to 32 VDC
<500
µ
A maximum @ 24 VDC
4 seconds minimum,
20 seconds maximum
1 second minimum,
8 seconds maximum
Relay Characteristics (relay base only)
Coil:
2 coil latching
Contact Type:
1 Form C
Contact Relay
Resistive:
2 A @ 30 VDC
Inductive:
0.3 A @ 110 VDC
(with .35 PF or greater)
0.3 A @ 120 VAC
(with .35 PF or greater)
1.0 A @ 30 VDC
(with .6 PF or greater)
B200/B500 Series Wiring Guide
TWISTED PAIR RECOMMENDED
OTHER INTELLIGENT
DEVICES
(+)
3 - COMM
OUT (+)
TWISTED PAIR RECOMMENDED
OTHER INTELLIGENT
DEVICES
(+)
(–)
(+)
(–)
(+)
(–)
(–)
LISTED COMPATIBLE CONTROL PANEL
1 - COMM
IN (+)
)
1(+
2(–
(+
) 3
2 - COMM
IN (–)
(S
) 4
2 - COMM
OUT (–)
LISTED COMPATIBLE CONTROL PANEL
)
1
(N.O.)
4
3
(+)
(COMMON)
2
(N.C.)
5
(–)
6
(S)
3 RELAY COMMON
1 NORMALLY CLOSED
2 NORMALLY OPEN
CLASS A OPTIONAL WIRING
CLASS A OPTIONAL WIRING
Isolator Base
Relay Base
Ordering Information
Smoke Detector
Base
B224RB
Relay
B524RB
B224BI
Isolator
B524BI
●
●
1251
●
●
●
●
●
●
●
1551
2251
●
●
●
●
●
255 1
2551T
5551
5551R
System Sensor Worldwide Manufacturing & Distribution
In Canada:
System Sensor Canada, A Division
of Pittway Corporation of Canada
6581 Kitimat Road, Unit #7
Mississauga, Ontario
Canada L5N 3T5
Telephone: 905-812-0767
Fax: 905-812-0771
Page 2
In the United Kingdom:
System Sensor Europe, Ltd.
A Member of Pittway Corporation
Horsham Gates III, North St.
Horsham, West Sussex
RH13 5PJ, United Kingdom
Telephone: 44-1403-276500
Fax: 44-1403-276501
In India:
System Sensor India
A Division of Pittway
A-204 Maheshwari Nagar
Orkay Mills Lane
Andheri East, Mumbai 400093
Telefax: 91-022-8202564
In the Far East:
System Sensor Far East
A Division of Pittway
Rm 903, Tower A, New Mandarin
Plaza, 14 Science Museum Road
TST East, Kowloon, Hong Kong
Telephone: 852-2191-9003
Fax: 852-2736-6580
A05-235-01
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