Model SN22 is an electrically held lighting contactor.
30 amp Three-pole normally open (N.O.) contactor 

FEATURES

• 3 pole 120/277/600V
• 25 A. Ballast
• 30 A. General purpose
• 15 A. Tungsten 
• Coil: 36VA inrush, 8VA sealed
• Normally Open (N.O.) main contacts
• UL CSA , CE approved
• Dimensions: 3.3 h x 2.1 w x 2.6 d in ( 8.4 x 5.3 x6.6 cm )
• Weight: 0.58 lb (0.26 kg