for Aerial Bombs

Universal air heat resistant fuze AVU-ETMA with electrical and mechanical starting devices is intended for high-explosive, fragmentation high-explosive, high-explosive incendiary, incendiary air-bombs and incendiary containers. The fuse is fitted into nose or base fuse threaded filling holes.

The fuze provides point detonating and inertia action, ignition SQ and two delay modes.

Fuze AVU-ETMA completes the following types of air bombs:
· OFAB-100-120
· OFAB-250-270
· FAB-500M-62

The fuze is safe in storage, handling and operation and ensures the safe and reliable function of the ammunition in all weather conditions.


Action: Point-Detonating or Delayed Action
Arming: Mechanical or Electric
Operational Temperature Range: -60 to +150°C
Maximum Allowed Exposure at 150°C: 90 minutes
Shelf Life: 12.5 years
Weight of Fuze (without additional ring): 1920 grams
Weight of Fuze (with additional ring): 1970 grams
Method of Arming: Mechanical or Electric
Voltage necessary for operation of electric starting device: 27 V
Delay Depending on Height of Bombing: – – –
Assault Circuit with delay (automatic): 8.2 – 14.5 seconds
Arming: By set-back and rotational forces
Altitude Circuit: Immediate (setting M) Super Quick – SQ
Altitude Circuit: Short Delay (setting M3) 0.01 – 0.04 seconds
Altitude Circuit: Middle Delay (factory preset) 0.06 – 0.09 seconds
Distance Arming Delay: Assault Circuit 1.30 – 2.60 seconds
Distance Arming Delay: Setting П 3.50 – 5.50 seconds
Distance Arming Delay: Altitude Circuit 8.70 – 13.5 seconds
PACKING: – – – 
Number of Fuzes in one Case: 16 fuzes in 4 metal air-tight sealed box in a wooden case
Case Dimensions: 658x598x191 mm.
Case Gross Weight: 57 kg.
Case Volume:  0.075 cubic meters