Description / توضیحات
Ordering Information
Model 5550 Mechanical Vibration Switch
Hazardous Area Rating 3 OBSOLETE, specify A=4 instead(1)
Relay Contacts 1 SPDT, Silver, 15A(2)(3)
Reset / Startup Delay Coil Holding Strength(4) 1 5g
Reset / Startup Delay Coil Voltage 3 224 Vdc(4)
Wiring Entry / Mounting Hole Pattern(5) 4 M20 x 1.5 / Metrix 5097, VS-2 EX, or 3666(6)
Environmental Rating 0 NEMA 4 / IP66(7)
Options A=3, A=8, and A=10 were all for Ex d IIB T6 Gb. These are now replaced by the A=4, A=9, and A=11, respectively, which reflect the same approvals but with addition of the H2 gas group.
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 options C=2 and D=3 are simultaneously specified (2g, 24Vdc reset coil), the switch sensitive axis (see Figure 1 for 5550 and Figure 2 for 5550G) MUST be oriented vertically with the cover facing up. This coil lacks sufficient holding strength to support the trip plate when the switch is mounted horizontally or upside down. The switch may be mounted at any orientation for all other options.
Consult Figure 1 for mounting plate dimensions corresponding to E options.
UL US/CA approvals require tapered threads for conduit and are not compatible with option E=4, 6, or 8.
If left blank, option 0 is provided.
