Ordering Information Model 5550 Mechanical Vibration Switch Hazardous Area Rating 4 ATEX/IECEx Flameproof Ex d IIB+H2 T6 GbEx tb IIIC T85°C Db Ta -40°C to +70°C IP66 silver contacts(1) Relay Contacts 2 DPDT, Silver, 15A(1)(2) Reset / Startup Delay Coil Holding Strength(3) 1 5g Reset / Startup Delay Coil Voltage 0 None(3)(4) Wiring Entry / Mounting Hole Pattern(5) 1 ¾” NPT / Metrix 5173 or 5175 Environmental Rating 0 NEMA 4 / IP66(4) Options A=0 through A=4 are only compatible with B=1 or B=2. Options A=5 through A=9 are only compatible with B=3 or B=4. INMETRO approvals (A=11) available with silver relay contacts only (B=1 or B=2)When D=0 (no reset /startup delay coil), the C option is ignored regardless of which value is selected. All switches ship with a fullscale range of approximately 16gs. If left blank, option 0 is provided.Consult Figure 1 for mounting plate dimensions corresponding to E options.
