Doc# 1231558 • REV C (November 2017) Page 18 of 20
NOTE: The 24 VDC reset coil comes in three dierent versions,
depending on the holding strength opon specied (opon C).
Although each has the same min/max voltage rang, the current
draw will be larger for larger holding coil strengths, as noted in Table 1. Be
certain your power source for this coil is capable of supplying the neces-
sary current for the rated holding strength.
5.3.2 Duraon Consideraons
The duraon of the startup delay (approximately 30 seconds) is factory set and cannot
be altered. With the switch in an untripped state, connuous applicaon of the specied
voltage to the reset terminals will iniate the delay feature, but will not cause it to persist.
That is, applying a connuous voltage across the reset terminals for longer than 20-30
seconds does not allow one to arbitrarily increase the duraon of the startup delay. See
secon 5.2.1 for a more in-depth explanaon of the circuit operaon.
6. DRAWINGS, SPECIFICATIONS, AND ORDERING INFORMATION
Unless otherwise noted, all gures and illustraons in this manual depict the model 5550
mechanical switch. The 5550G is idencal in terms of its internal mechanisms, but has a
dierent housing that is rated for use in the more stringent IIC gas group. For addional in-
formaon on models 5550 and 5550G, including outline diagrams, Metrix specicaons, and
ordering informaon, refer to Metrix product datasheet # 1004461. Refer also to hazardous
area installaon manuals M8905 (5550) and 100356 (5550G) as appropriate.
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