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Signal- and Motor-Rated Float Switch Matrix Signal-rated mechanical floats',(for control switch applications) P Modell Normally open Mechanical Yes r a j n/a n/a !, 2.00 in. 1.50 in. ! 0.`5U in. 2.00 in, N Model' Normally closed Mechanical Yes n;a n)a n/a L 2.00 in, 1.50 in.�0,50 in 2.00 in. Motor-rated floats'(for pump switch applications) „ B Model Normally open Mechanical No 120V 13A 112 hp 2.00 in b 2.50 in. 1.50 in. 4.00 in. 240V 13A 1 hp 3.00 in. 3.00 in. 1.50 in. 4.50 in. 4.00 in. 3.25 in, 1.50 in. 4.75 in. C Model Normally open Mechanical No 120V I 3A 1/2 hp 2.00 in. 3.00 in. 2.50 in. 5.50 in. 240V 15A 2 hp 3.00 in.° 3.50 in. 3.00 in. 6.50 in. 4.00 in. 4.00 in. 3.50 in. 7.50 in. 5.00 in. 4.50 in. 4.00 in. 8.50 in. 6.00 in. 5.25 in. 4.25 in. 9.50 in. G Model Normally open Mercury Yes 20V 15A 3/4 hp 2.00 in. 1.50 in. 3.00 in. 4.50 in. 240V 15A 2 hp 3.00 in.' 1.75 in. 3.00 in. 4.75 in. 4,00 in. 2.00 in. 3.50 in. 5.50 in. a.Suitable for use with VCOM and MVP b.Standard tether length Notes State:normally open or normally closed Drawdown The default state of a float-normally open or normally closed-refers to the contact Drawdown(in inches)refers to the difference in liquid level between a float switch's activation positrons in the float when the float is resting(down).Float switches have an internal contact. and deactivation points.Drawdown can be altered by adjusting the tether length of the float The terms"nomally open'(WO)and-nominally closed'(N/C)refer to the state of the float switch cord.When selecting float switches,keep in mind that any float switch that can directly switch contact in the down position.A normally open float switch has an open contact(610 in start and stop a pump(one that has no motor contactor in the control panel)Should have a the down position and a normally closed float switch has a closed contact(on)in the down drawdown capability,to avoid rapid cycling of the pump. position.Different panel functions require different types of float switches.Most applications Signal-rated or motor-rated require float switches that are normally open.One notable exception is the redundant off and Every float has a maximum amount of current it can handle.Exceeding these limits may cause low-level alarm function that requires a normally closed float switch,except with MVP and premature failure.Signal-rated or"control"floats are used to activate pump control panels vcob1 panels. and alarms.Only low amperage signals pass through these float switches,hence the float 'IR(intrinsically safe relay) switch is°signal-rated."All Orenco panels that use motor contactors can use signal-rated float Approved for use with intrinsically sate,Class 1.Division 1 applications,where reliable float switches.In some systems,a float switch is used to directly start and stop a pump.In this switch operation with very low current is requiredapplication,the current that is running the pump passes through the float Switch as well,and the float switch must be"motor-rated."in most instances,a motor-rated float switch can be used as a signal float switch. NTD-MF-MF-1 Orenco Systems®Inc.,814 Airway Ave.,Sutherlin,OR 97479 USA - 800-348-9843-541-459-4449-www.orenco.com Rev.2.0,°02/16 Page 2 of 2