NARVA HEAVY DUTY DUAL POLE BATTERY MASTER ISOLATION SWITCH WITH REMOVABLE KEY CONTACTS RATED 250APart No. 61052 Type BATTERY MASTER SWITCH Brand NARVA Unit of Measure EACH Description Narva Heavy Duty Dual Pole Battery Master Isolation Switch With Removable Key (Contacts Rated 250A @ 12V) Warranty One Year Number of Terminals 4 Power Rating (Amp) 250A @ 12V Switch Action Off On Voltage 12 or 24 Lamp Colour s Not Applicable Number of Poles 2 Number of Positions 2 Switch Type Battery Master Isolation Switch Illumination Non Illuminated Weight 1.