Bosch D290 Specsheet

Fire Alarm Systems | D290 Four‑wire Detector Base (24 VDC)

D290 Four‑wire Detector Base (24 VDC)

www.boschsecurity.com

u 24 VDC, four‑wire circuit compatibility

u Dual Form C relays

u Low profile construction

Use the D290 Detector Base where the specifications
call for a 24 VDC, four‑wire photoelectric smoke
detector. When using the detector base, a single pair
of wires is run for the initiating circuit and another pair
is run for the power. The power circuit connects to the
power supply of the control panel or an auxiliary UL
Listed power supply. A D275 Power Supervision
Module must be installed after the last detector base
on each power circuit to properly supervise the circuit
voltage.

Certifications and approvals

Region Certification

USA UL UROX: Smoke - Automatic Fire Detectors

(ANSI\UL 268)

CSFM see our website

NYC-

284-91-E, Vol. II

MEA

Installation/configuration notes

Compatible Products

The following products are compatible with the D290
Four‑wire Detector Base:

u Easy to install and service

u Molded in UL Listed white ABS plastic

Category Product ID Product Description

Control

Compatible with all UL Listed four‑wire control panels.

Panels

Detector
Heads

D254 Fixed‑temperature(+135°F [+57°C])

heat detector

D255 Fixed‑temperature (+190°F [+88°C])

heat detector

D256A Rate‑of‑Rise and fixed‑temperature

(+135°F [+57°C]) heat detector

D257A Rate-of-Rise and fixed-temperature

(+190°F [+88°C]) heat detector

D282A Photoelectric smoke detector head

D283A Photoelectric smoke detector head with

fixed‑temperature (135°F [57°C]) heat
sensor

Modules D275 Power supervision module

Mounting

The detector base mounts on standard four‑inch
octagonal or four‑inch square electrical back boxes.

2 | D290 Four‑wire Detector Base (24 VDC)

Represented by:

Americas: Europe, Middle East, Africa: Asia-Pacific: China: America Latina:

Bosch Security Systems, Inc.
130 Perinton Parkway
Fairport, New York, 14450, USA
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.us

Bosch Security Systems B.V.
P.O. Box 80002
5617 BA Eindhoven, The Netherlands
Phone: + 31 40 2577 284
Fax: [phone]
[e-mail]
www.boschsecurity.com

Robert Bosch (SEA) Pte Ltd, Security
Systems
11 Bishan Street 21
Singapore 573943
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.asia

Bosch (Shanghai) Security Systems Ltd.
201 Building, No. 333 Fuquan Road
North IBP
Changning District, Shanghai
200335 China
Phone [phone]
Fax: [phone]
www.boschsecurity.com.cn

Robert Bosch Ltda Security Systems Division
Via Anhanguera, Km 98
CEP 13065-900
Campinas, Sao Paulo, Brazil
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.com

© Bosch Security Systems 2014 | Data subject to change without notice
2707256715 | en, V2, 07. Aug 2014

Notice

Mounting boxes installed in plenums, pressurized
stairwells, or other air spaces must follow all
applicable codes and the requirements of the
authority having jurisdiction (AHJ).

Wiring

For detailed wiring requirements, see the D250A-D290
Series installation instructions.

Parts included

Quant. Component

1 D290 detector base

1 Hardware pack

1 Literature pack

Technical specifications

Electrical

Current (alarm): 43 mA

Current (standby): 0.035 mA to 0.055 mA; depends on

detector head

Voltage (operating): 17.7 VDC to 30 VDC

Environmental

Temperature

+32°F to +100°F (0°C to +38°C)

(operating):

Mechanical

Color: Bone white

Dimensions (diameter x

5.9 in. x 1 in. (15.1 cm x 2.5 cm)

D):

Outputs

Alarm: Two Form C relays with contacts rated for

2 A at 30 VDC, 1 A at 125 VAC for resistive
loads

Ordering information

D290 Four‑wire Detector Base (24 VDC)

24 VDC, four wire circuit compatibility

Order number D290