INSTALLATION AND MAINTENANCE INSTRUCTIONS
B401 Plug-In Detector Base
For use with the following detectors:
US Models:
1151, 1451, 2151, 2451, 2451TH, 5451
European Models:
1151E, 1451E, 2151E, 2451E, 5451E
Australian Models:
1151AUS, 1451AUS, 2151AUS, 2451AUS, 4451AUS
5451AUS, 51A51, 51B51, 51C51, 51D51
Specifications
Base Diameter:
Base Height:
Weight:
Mounting:
Operating Temperature Range:
Operating Humidity Range:
Electrical Ratings — includes base and detector
System Voltage:
Maximum Ripple Voltage:
Start-up Capacitance:
Standby Ratings:*
Alarm Ratings:
Reset Voltage:
Reset Time:
Start-up Time:
* 1151E: 30 µA Maximum.
** Alarm current MUST be limited to 100 mA maximum (130 mA for models 1151 and 2151) by the control panel.
If used, the RA400Z Remote Annunciator operates within the specified detector alarm currents.
Before Installing
Please thoroughly read the System Smoke Detectors
Application Guide, which provides detailed information
on detector spacing, placement, zoning, wiring, and spe-
cial applications. Copies of this manual are available from
System Sensor.
NOTICE: This manual should be left with the owner/user
of this equipment.
IMPORTANT: The detector used with this base must be
tested and maintained regularly following NFPA 72 require-
ments. The detector used with this base should be cleaned
at least once a year.
10.2 cm (4.0 inches)
2.0 cm (0.8 inches)
152 g (0.34 lb.)
50 mm box
60 mm box
–10° to +60°C (14° to 140°F) — European Installation
0° to 49°C (32° to 120°F) — US/Australian Installation
10% to 93% Relative Humidity
Base And Smoke Detector
12/24 VDC
4 Volts peak to peak
0.02 µF Maximum
8.5 VDC Minimum
35 VDC Maximum
120 µA Maximum
4.2 VDC Minimum at 10 mA**
6.6 VDC Maximum at 100 mA**
2.5 VDC Minimum
0.3 Seconds Maximum
34 Seconds Maximum
1
3825 Ohio Avenue, St. Charles, Illinois 60174
Base And Heat Detector
24 VDC
4 Volts peak to peak
0.02 µF Maximum
15 VDC Minimum
35 VDC Maximum
100 µA Maximum
4.2 VDC Minimum at 10 mA**
6.6 VDC Maximum at 100 mA**
2.5 VDC Minimum
0.3 Seconds Maximum
34 Seconds Maximum
General Description
This B401 plug-in detector base is used with System Sensor
smoke and heat detector heads. The capability of plugging
these detectors into a variety of special bases makes them
more versatile than equivalent direct-wired models. Refer
to the System Sensor catalog for other available plug-in
detector bases.
The B401 base is intended for use in 2-wire systems, with
screw terminals provided for power and remote annuncia-
tor connections.
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
I56-0338-010R
03-11
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