Bosch D250A Datasheet

Fire Alarm Systems | D250A Two‑wire Detector Base (12/24 VDC)

D250A Two‑wire Detector Base

(12/24 VDC)

www.boschsecurity.com

u

12 VDC or 24 VDC operation u

Two‑wire circuit compatibility u

Can be used in circuit controlled by D291M addressable base u

Low‑profile six‑inch diameter base accepts interchangeable detector heads u

Easy head removal for cleaning and servicing

The D250A is a two‑wire, 12 VDC or 24 VDC detector base without an alarm LED. It accepts Bosch D254 and

D255 heat detector heads. Use the detector base with either of these heat detector heads in circuits where specifications call for fixed‑temperature heat detectors. You can also use this detector base with the

Bosch D256A Rate‑of‑Rise and Fixed‑temperature

(+135°F [+57°C]) Heat Detector and D257A

Rate‑of‑Rise and Fixed‑temperature (+190°F [+88°C])

Heat Detector.

The detector base also operates in a circuit controlled by the Bosch D291M Addressable Smoke Detector. In this circuit configuration, the D291M Addressable

Detector Base controls a supervised 24 VDC circuit containing up to 19 detector bases that accept any

D291M listed head. In this case, the detector base is not limited to heat detection heads.

Notice

For more information on using the detector base with the D291M, see the D291M Installation

Instructions.

Certifications and approvals

Region

USA

Certification

UL

CSFM

UROX: Smoke - Automatic Fire Detectors

(ANSI\UL 268) see our website

Installation/configuration notes

Compatible Products

The following products are compatible with the D250A

Two‑wire or Four‑wire Detector Base:

Category

Control

Panels

Product ID

D7022

D7024

D7024

D7212

D7212G

D7412G

D9112

Product Description

Conventional FACP

Conventional FACP

Addressable FACP

Addressable control panel

Addressable control panel

Addressable control panel

Addressable control panel

2 | D250A Two‑wire Detector Base (12/24 VDC)

Detector

Bases

Detector

Heads

D9412G

D9124

D291M

Addressable control panel

Addressable FACP

Addressable multiple detector base

D254A

D256A

D257A

Fixed temperature heat detector

(+135°F [+57°C])

Rate‑of‑Rise and fixed temperature heat detector (+135°F [+57°C])

Rate‑of‑Rise and fixed temperature heat detector (+190°F [+88°C])

Ionization smoke detector head

Photoelectric smoke detector head

D281A*

D282A*

D283A* Photoelectric smoke detector head with fixed temperature (+135°F [+57°C]) heat sensor

* When used in a circuit with a D291M multiple detector base, the D250A accepts these detector heads listed for use with the D291M.

Mounting

The detector base fits on standard three‑inch octagonal and four‑inch square and octagonal back boxes.

Wiring

Wiring connections are accessible with the base mounted to the back box.

Parts included

Quant.

1

1

1

Component

D250A detector base

Hardware pack

Literature pack

Technical specifications

Electrical

Current (operating):

Voltage (operating):

Depends on detector head; refer to pertinent detector head specification

8.0 VDC to 36.3 VDC

Environmental

Temperature

(operating):

Mechanical

Color:

Dimensions

(diameter):

+32°F to +100°F (0°C to +38°C)

Bone white

6 in. (15.2 cm)

Ordering information

D250A Two‑wire Detector Base (12/24 VDC)

Accepts Bosch D254 and D255 heat detector heads

Order number D250A

3 | D250A Two‑wire Detector Base (12/24 VDC)

Represented by:

Americas:

Bosch Security Systems, Inc.

130 Perinton Parkway

Fairport, New York, 14450, USA

Phone: +1 800 289 0096

Fax: +1 585 223 9180 [email protected]

www.boschsecurity.us

Europe, Middle East, Africa:

Bosch Security Systems B.V.

P.O. Box 80002

5617 BA Eindhoven, The Netherlands

Phone: + 31 40 2577 284

Fax: +31 40 2577 330 [email protected]

www.boschsecurity.com

Asia-Pacific:

Robert Bosch (SEA) Pte Ltd, Security

Systems

11 Bishan Street 21

Singapore 573943

Phone: +65 6571 2808

Fax: +65 6571 2699 [email protected]

www.boschsecurity.asia

© Bosch Security Systems 2014 | Data subject to change without notice

2707042827 | en, V2, 06. Aug 2014

China:

Bosch (Shanghai) Security Systems Ltd.

201 Building, No. 333 Fuquan Road

North IBP

Changning District, Shanghai

200335 China

Phone +86 21 22181111

Fax: +86 21 22182398 www.boschsecurity.com.cn

America Latina:

Robert Bosch Ltda Security Systems Division

Via Anhanguera, Km 98

CEP 13065-900

Campinas, Sao Paulo, Brazil

Phone: +55 19 2103 2860

Fax: +55 19 2103 2862 [email protected]

www.boschsecurity.com