100 mm

Ex Signaling devicesIS-Mini series Sounders 100 dB (A)IS-mA1• very economical acoustic alarm• certifi ed for use in Ex-Zones 0, 1 and 2!• compact design with a diameter of just 88 mm• sounder operated via certifi ed zener barriers or galvanic isolators• 49 loud tones at 100 dB (A)• very well suited for fi re alarm systems and direct control due to lowpower consumption• self-synchronising sounder for clear tone perception• 2 different externally controllable tones• volume controlr =18 mIP 65+ 60 °C- 40 °C• also available as mining-certifi ed device (IM1 EEx ia)See pages 242 and 243 for suitable zener barriersmax. signalreceptionrangeProtectionsystemOperatingtemperatureElectrical dataRated voltageOperating range24 V DC16 V – 28 VNominal current consumption 25 mA 11typical for connection to 24 V DC via 28 V / 300 Ω zener barrier. Power must be connected via a zener barrier (max. 28 V DC, 93 mA DC, 0.66 W) or a galvanicisolator, specified by the system certificate (see page 243)Mechanical dataIS-mA1Type of protection EN 50014:1997 A1+A2, EN 50020 ‘ia’ inherently safe, EN 50284:1999Explosion protection II 1G EEx ia IIC T4 - 40 °C ... + 60 °C TaCategory (area of use) 1G (Zone 0) / 2G (Zone 1) / 3G (Zone 2)Certificate SIRA 05 ATEX2084XTesting bodySIRASound pressure level100 dB (A)Storage temperature - 40 °C … + 70 °CRelative humidity 90 %Protection system according to EN 60529 IP 65Duty cycle 100 %Material ABS, self-extinguishing UL94VO & 5VA, similar RAL 3000 (fl ame red)Connecting terminals 0.5 – 2.5 mm 2Cable entry2 x M20 (disruption prepared)Weight230 gDimensionsØ 88.7 99M209585.5 A/FM20Ordering detailsArticle numbersRated voltageIS-mA124 V DC320 34 80 0 000228www.pfannenberg.com