| 摘要 |
FIELD: electricity. ^ SUBSTANCE: fuse for fire automation systems includes housing (1) consisting of dielectric, for example glass bottle (2) and two bottle holders (3) and (4), and the first fuse element (5) destructed when the specified threshold current value through it is exceeded, and placed inside bottle (2) and connected to two holders (3) and (4). Besides, fuse includes the second fuse element (6) which shunts the first fuse element (5) and is made from alloy the fusion point of which is 70 to 150C. ^ EFFECT: excluding the possible failure of fire warning system in the situation when there is short circuit of signal line wires due to fire impact on elements of fire warning and evacuation control system. ^ 2 dwg |
