The OHMITE MANUFACTURING MODEL 312 TAP SWITCH 30A 300V is a high-current, non-shorting power tap switch designed for reliable electrical switching applications. Constructed with durable ceramic and metal alloy components, this switch provides excellent resistance to arcing, burning, and charring, ensuring long-lasting performance in demanding environments.
Key Features
High-current handling capacity up to 30A at 300V
Non-shorting design disconnects previous circuit before establishing a new connection
Slow-breaking, quick-make action optimized for AC current switching
Ceramic arc-proof body for enhanced durability
Silver alloy contacts with self-cleaning wiping action for reliable operation
All-soldered and riveted construction for mechanical and operational integrity
RoHS compliant product available (add “E” suffix to part number)
UL listed for models 111, 212, 312, and 412
Specifications
Material
Body
Ceramic, arc-proof (models 212, 312, 412, 608)
Compression Molded Polyester (model 111)
Melamine Phenolic (model 711)
Contacts
Silver alloy with rounded seating for assured contact and self-cleaning action
Mounting Options
Model 711: Uses 3/8-32 bushing for panels up to 1/8" thick, with four non-turn lug positions and recesses for positioning non-turn washers at 12, 3, 6, and 9 o’clock. Shaft diameter: 1/4”.
Model 111: For 1/4” panel, uses 3/8-32 bushing and hex nut. Shaft diameter: 1/4”.
Model 212: Uses 3/8-32 threaded bushing and hex nut. Shaft diameter: 1/4”.
Model 312: Uses three 10-32 flat-head machine screws, 3/8” long, for panels up to 1/4”. Shaft diameter: 1/4”.
Model 412: Similar mounting to Model 312, with a 5/16” hole in panel. Shaft diameter: 1/4”.
Model 608: For panels up to 1”, uses three 1/4-20 flat-head screws, 1 1/4” long, with a 7/16” hole in panel. Shaft diameter: 3/8”.
Additional Details
Electro-mechanical device with finite operational life due to wear
For more detailed specifications and technical information, please refer to the datasheet linked above. This product is RoHS compliant and UL listed for select models.
{"id":10014619173181,"title":"312-3E","handle":"312-3e","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eOHMITE MANUFACTURING MODEL 312 TAP SWITCH 30A 300V\u003c\/strong\u003e is a high-current, non-shorting power tap switch designed for reliable electrical switching applications. Constructed with durable ceramic and metal alloy components, this switch provides excellent resistance to arcing, burning, and charring, ensuring long-lasting performance in demanding environments.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-current handling capacity up to 30A at 300V\u003c\/li\u003e\n\u003cli\u003eNon-shorting design disconnects previous circuit before establishing a new connection\u003c\/li\u003e\n\u003cli\u003eSlow-breaking, quick-make action optimized for AC current switching\u003c\/li\u003e\n\u003cli\u003eCeramic arc-proof body for enhanced durability\u003c\/li\u003e\n\u003cli\u003eSilver alloy contacts with self-cleaning wiping action for reliable operation\u003c\/li\u003e\n\u003cli\u003eAll-soldered and riveted construction for mechanical and operational integrity\u003c\/li\u003e\n\u003cli\u003eRoHS compliant product available (add “E” suffix to part number)\u003c\/li\u003e\n\u003cli\u003eUL listed for models 111, 212, 312, and 412\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eBody\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCeramic, arc-proof (models 212, 312, 412, 608)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression Molded Polyester (model 111)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMelamine Phenolic (model 711)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eContacts\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilver alloy with rounded seating for assured contact and self-cleaning action\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMounting Options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 711:\u003c\/strong\u003e Uses 3\/8-32 bushing for panels up to 1\/8\" thick, with four non-turn lug positions and recesses for positioning non-turn washers at 12, 3, 6, and 9 o’clock. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 111:\u003c\/strong\u003e For 1\/4” panel, uses 3\/8-32 bushing and hex nut. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 212:\u003c\/strong\u003e Uses 3\/8-32 threaded bushing and hex nut. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 312:\u003c\/strong\u003e Uses three 10-32 flat-head machine screws, 3\/8” long, for panels up to 1\/4”. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 412:\u003c\/strong\u003e Similar mounting to Model 312, with a 5\/16” hole in panel. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 608:\u003c\/strong\u003e For panels up to 1”, uses three 1\/4-20 flat-head screws, 1 1\/4” long, with a 7\/16” hole in panel. Shaft diameter: 3\/8”.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eElectro-mechanical device with finite operational life due to wear\u003c\/li\u003e\n\u003cli\u003ePart Number: 312-3E\u003c\/li\u003e\n\u003cli\u003eManufacturer: OHMITE MANUFACTURING\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: MX\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003ePackage Type: BOX\u003c\/li\u003e\n\u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-oi\/controls_switches.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more detailed specifications and technical information, please refer to the datasheet linked above. This product is RoHS compliant and UL listed for select models.\u003c\/p\u003e","published_at":"2025-08-11T01:43:23+05:30","created_at":"2025-08-11T01:43:23+05:30","vendor":"Waldom Electonics","type":"","tags":["300V","30A","IMPORT_CSV","OHMIT","Switch","TAP","WLDM"],"price":3798918,"price_min":3798918,"price_max":3798918,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50582819307837,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"312-3E","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"312-3E","public_title":null,"options":["Default Title"],"price":3798918,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"312-3E","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/312-3E_12020508_e395fcce.jpg?v=1754856807"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/312-3E_12020508_e395fcce.jpg?v=1754856807","options":["Title"],"media":[{"alt":null,"id":45768675819837,"position":1,"preview_image":{"aspect_ratio":1.025,"height":200,"width":205,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/312-3E_12020508_e395fcce.jpg?v=1754856807"},"aspect_ratio":1.025,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/312-3E_12020508_e395fcce.jpg?v=1754856807","width":205}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eOHMITE MANUFACTURING MODEL 312 TAP SWITCH 30A 300V\u003c\/strong\u003e is a high-current, non-shorting power tap switch designed for reliable electrical switching applications. Constructed with durable ceramic and metal alloy components, this switch provides excellent resistance to arcing, burning, and charring, ensuring long-lasting performance in demanding environments.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-current handling capacity up to 30A at 300V\u003c\/li\u003e\n\u003cli\u003eNon-shorting design disconnects previous circuit before establishing a new connection\u003c\/li\u003e\n\u003cli\u003eSlow-breaking, quick-make action optimized for AC current switching\u003c\/li\u003e\n\u003cli\u003eCeramic arc-proof body for enhanced durability\u003c\/li\u003e\n\u003cli\u003eSilver alloy contacts with self-cleaning wiping action for reliable operation\u003c\/li\u003e\n\u003cli\u003eAll-soldered and riveted construction for mechanical and operational integrity\u003c\/li\u003e\n\u003cli\u003eRoHS compliant product available (add “E” suffix to part number)\u003c\/li\u003e\n\u003cli\u003eUL listed for models 111, 212, 312, and 412\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eBody\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCeramic, arc-proof (models 212, 312, 412, 608)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression Molded Polyester (model 111)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMelamine Phenolic (model 711)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eContacts\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilver alloy with rounded seating for assured contact and self-cleaning action\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMounting Options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 711:\u003c\/strong\u003e Uses 3\/8-32 bushing for panels up to 1\/8\" thick, with four non-turn lug positions and recesses for positioning non-turn washers at 12, 3, 6, and 9 o’clock. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 111:\u003c\/strong\u003e For 1\/4” panel, uses 3\/8-32 bushing and hex nut. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 212:\u003c\/strong\u003e Uses 3\/8-32 threaded bushing and hex nut. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 312:\u003c\/strong\u003e Uses three 10-32 flat-head machine screws, 3\/8” long, for panels up to 1\/4”. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 412:\u003c\/strong\u003e Similar mounting to Model 312, with a 5\/16” hole in panel. Shaft diameter: 1\/4”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 608:\u003c\/strong\u003e For panels up to 1”, uses three 1\/4-20 flat-head screws, 1 1\/4” long, with a 7\/16” hole in panel. Shaft diameter: 3\/8”.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eElectro-mechanical device with finite operational life due to wear\u003c\/li\u003e\n\u003cli\u003ePart Number: 312-3E\u003c\/li\u003e\n\u003cli\u003eManufacturer: OHMITE MANUFACTURING\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: MX\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003ePackage Type: BOX\u003c\/li\u003e\n\u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-oi\/controls_switches.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more detailed specifications and technical information, please refer to the datasheet linked above. This product is RoHS compliant and UL listed for select models.\u003c\/p\u003e"}
