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Bosch LH3-UC25XS Horn Loudspeaker, Ex-Proof, Short Flare overview

Bosch (F.01U.318.943) Component Speakers

Manufacturers Product Description

The LH3-UC25XS horn loudspeaker is specifically designed and certified for installations where explosive gas-air mixtures are likely to be present. The horn is constructed from anti-static Polyamid material, making the horn sturdy and light weighted.FunctionsThe horn loudspeaker is standard supplied with a sturdy stainless steel mounting bracket allowing the sound beam to be accurately directed.The mounting bracket has a ratchet facility to ensure it stays correctly positioned.The connection cable is fed out through an ABS EX cable gland (M20) in the rear cover, which can be removed for entering the inside connection terminal block. For loop through connection, the rear cover is fitted with a second hole (covered with a blanking plug as standard supplied).The horn loudspeaker includes a transformer for 100 V input voltage, with taps on the primary winding for different power settings.The different power taps can easily be selected by connecting to the appropriate terminal of the 6-way terminal block.For enabling loudspeaker supervision, a wire loop from the secondary side of the horn loudspeaker is available in the connection area. This wire loop is normally closed, but if used with the supervision board, cut and connected.

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General Information

Manufacturer Website Address
Brand NameBosch
Product SeriesEX
Product TypeSpeaker
ManufacturerThe Bosch Group
Manufacturer Part NumberF.01U.318.943
Packaged Quantity1
Product NameLH3-UC25XS Horn Loudspeaker, Ex-Proof, Short Flare
Product ModelLH3-UC25XS


Package Contents
  • LH3-UC25XS Horn Loudspeaker, Ex-Proof, Short Flare
  • 1 x Installation Instruction
  • 1 x M20 EX Cable Gland PG13

Technical Information

Minimum Frequency Response480 Hz
Sensitivity118 dB
RMS Output Power25 W
Impedance400 Ohm
Maximum Frequency Response7 kHz
PMPO Output Power30 W

Physical Characteristics

Width170 mm
Depth207 mm
Weight Approximate2.37 kg
Height144 mm
Dimensions144 mm (H): 170 mm (W): 207 mm (D)

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