Datasheet 5550 & 5550G Mechanical Vibration Switches Overview Model 5550 and 5550G mechanical switches provide basic, economical vibration protection by means of a simple and highly reliable "over center" snap action mass and spring mechanism. In the presence of sufficient vibration along the switch’s sensitive axis, the switch snaps from a stable "untripped" state to a stable "tripped" state, allowing automatic machinery shutdown or alarming when excessive vibration occurs. Once tripped, the switch must be returned to its untripped state via its local reset plunger (5550 only), or via voltage applied to its remote reset coil (standard on 5550G, optional on 5550). A single set of silver‐plated SPDT relay contacts are provided as standard for connecting the switch to a machine control or annunciation circuit. An option for DPDT contacts is also available, and for extremely corrosive environments, gold‐plated relay contacts may be ordered. Model 5550 Mechanical Vibration Switch Model 5550G Mechanical Vibration Switch Key Feature Comparison IECEx / ATEX Flameproof up to Gas Group Rating IIB + H2 IECEx / ATEX Flameproof up to Gas Group Rating IIC UL / cUL Explosion Proof Ratings for Div 1 areas Remote Reset / Startup Delay Setpoint Adjustment Screw Reset NEMA 4 / IP66 Rating NEMA 4X / IP66 Rating Mounting Footprint CE Mark 5550 Optional Not Available Optional Optional Externally Accessible Local (Std) and Remote (Opt) Standard Optional Rectangular, 4‐hole Standard Document 1004461 Rev. K (Feb 2012) 5550G Standard Standard Not Available Standard Internally Accessible Remote Only Standard Standard Rectangular, 2‐hole Standard

Datasheet 5550 & 5550G Mechanical Vibration Switches Selection Criteria reached. The holding strength of this solenoid must be properly specified at time of ordering to ensure it can force the switch into an untripped position and hold it there for the duration of the startup delay, even in the presence of high vibration levels (see ordering option C). The 5550 and 5550G use identical internal mechanisms and differ only in their housing styles, mounting footprints, hazardous area ratings, and externally accessible features. *NOTE: It is not possible to indefinitely prolong the duration of the ...

Datasheet 5550 & 5550G Mechanical Vibration Switches Remote Electrical Reset / Startup Delay Specifications All specifications are at +25C (+77° F) unless otherwise noted. 5550 Amplitude Range Frequency Range Setpoint Adjustment Wiring Entries Local Reset Temperature Limit Mounting Document 1004461 Rev. K (Feb 2012) Reset Coil Holding Strength Enclosure Material 0 to 16 g pk NOTE: Reset coil holding strength (option C) may limit the usable amplitude range of the switch when the startup delay feature is required. 0 – 60 Hz (0 – 3600 rpm) ...

Datasheet 5550 & 5550G Mechanical Vibration Switches Specifications Mounting Remote Electrical Reset / Startup Delay All specifications are at +25C (+77° F) unless otherwise noted. 5550G Amplitude Range Frequency Range Setpoint Adjustment Wiring Entries Local Reset Temperature Limit Document 1004461 Rev. K (Feb 2012) Reset Coil Holding Strength 0 to 16 g pk NOTE: Reset coil holding strength (option C) may limit the usable amplitude range of the switch when the startup delay feature is required. 0 – 60 Hz (0 – 3600 rpm) ...

Datasheet 5550 & 5550G Mechanical Vibration Switches Ordering Information D E A Hazardous Area Rating1,2,3 None, silver contacts UL / cUL Explosion Proof , silver contacts 1 Class I, Div 1, Groups C,D Class II, Div 1, Groups E,F,G UL / cUL Explosion Proof , silver contacts 2 Class I, Div 1, Groups B,C,D Class II, Div 1, Groups E,F,G ATEX / IEXEx Flameproof Ex d IIB T6 3 silver contacts ATEX / IECEx Flameproof Ex d IIB+H2 T6 4 silver contacts 5 Same as A=0 but gold contacts ...

Datasheet 5550 & 5550G Mechanical Vibration Switches Ordering Information NOTES: 1. 2. 5550‐ABC‐DEF 5550G Mechanical Vibration Switch A Hazardous Area Rating ATEX / IECEx G Ex d IIC T6(Ta ‐40C to +70C) Gb Ex tD A20 IP66 C 5550 Manual 5550G Manual 5550 Specification Drawing for Hazardous and Non‐Hazardous Areas SPDT, Silver, 15A DPDT, Silver, 15A SPDT, Gold, 1A DPDT, Gold, 1A Reset / Startup Delay Coil Holding Strength 1 2 3 D Metrix Document Number ...

Datasheet 5550 & 5550G Mechanical Vibration Switches Metrix Instrument Company 8824 Fallbrook Drive Houston, TX 77064 USA (281) 940‐1802 www.metrixvibration.com [email protected] Trademarks used herein are the property of their respective owners. Data and specifications subject to change without notice. Figure 2 – 5550G Mechanical Vibration Switch. Document 1004461 Rev. K (Feb 2012) © 2011 Metrix Instrument Company, L.P. Page 8 of 8