MEDC DB4 Speaker, up to 25 watts Exd(e), weather-proof


The MEDC DB4 Speaker is designed for use in potentially explosive gas and dusty atmospheres. This MEDC Speaker has a power rating up to 25 watts and is suitable for use in all gas groups including hydrogen.

The flame paths, flare and the body of the MEDC DB4 are manufactured out of UV stable glass reinforced polyester. Stainless steel screws and sinter are incorporated, ensuring a corrosion free product. A tapered flame path is used to overcome problems of assembly of parallel spigot flame paths.

An optional Exe terminal chamber is available. An uncertified version is also available for use in non-explosive atmospheres.

MEDC DB4 Speaker, up to 25 watts Exd(e), weather-proof

Please contact us for more information.
Weather-proof
Zone 1, Zone 2 & non-Ex use
GRP corrosion free flame paths
Stainless steel sinter and mounting bracket
119dBA at 25 watts at 1 meter
Addressable capability
Power tappings, via integral transformer
Ratcheted swivel bracket
Tapered flame path
8, 15, 20 and 25 watt versions available
BS 5839, part 8 compliant versions available
Optional Exe terminal chamber.
Material: Body & horn in anti-static, UV stable,
glass reinforced polyester
Swivel bracket in stainless steel
Captive cover screws in 316 stainless steel
Finish: Body and horn, natural black or
painted to customer’s color requirements
Mounting: Bracket with ratchet facility
Ingress Protection: IP66 & IP67
Rated power: 8, 15, 20 or 25 watts RMS continuous (at 25°C)
Frequency range: 400Hz to 8kHz
Weight: approx. 5.0kg (model dependent)
(add 0.5kg for Exe version)
Certifications: Certified to IEC60079-0, IEC60079-1,
IEC60079-7, IEC60079-31
Certified to EN50014, EN50018, EN50019
ATEX EEx d Cert. No. BAS00ATEX2097X
Ex II 2GD, EEx d IIC T4/T5
ATEX EEx de Cert. No. BAS00ATEX2098X
Ex II 2GD, EEx de IIC T4/T5
Not suitable for use in atmospheres containing
carbon disulphide
IECEx Cert. No. Exd: IECEx BAS 11.0083X
Ex d IIC T4/T5 Gb, Ex tb IIIC T100°C/T135°C Db
IECEx Cert. No. Exe: IECEx BAS 11.0084X
Ex de IIC T4/T5 Gb, Ex tb IIIC T100°C/T135°C Db
UL listed for USA and Canada:
-Class I, Div 2, Groups A-D
-Class II, Div 2, Groups F & G
-Class I, Zones 1 & 2, AExd IIC T5
GOST ‘R’ Certification: 1Exd IIC T4 & 1Exde IIC T4
Russian Fire Approval
GOST ‘K’ Certification: Exd IIC T4 & Exde IIC T4
Chinese (CQST) certification Exd IIC T5
Brazilian (Inmetro) Certification: Ex d IIC T5/T4/Gb
Ex de IIC T5/T4/Gb
American Bureau of Shipping Type Approval
DB4D and DB4E only
SIL 2 Certification to 61508. Cert. No. Sira FSP 11011

Related product:
MEDC DB4B high power explosion-proof Speaker.