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H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
H01H51/284—Polarised relays
Landscapes
Physics & Mathematics
(AREA)
Electromagnetism
(AREA)
Breakers
(AREA)
Electromagnets
(AREA)
Arc-Extinguishing Devices That Are Switches
(AREA)
