{"product_id":"2-pin-9-5mm-fuse-protector-connector-oem-7122-4123-30-7123-4123-30-doosan-daewoo-excavator","title":"2-Pin 9.5mm Fuse Protector Connector OEM 7122-4123-30 \/ 7123-4123-30 – Doosan Daewoo Excavator DH55 \/ DH150 \/ DH220 \/ DH300","description":"\u003ch2\u003e2-Pin 9.5mm Fuse Protector Connector – OEM 7122-4123-30 \/ 7123-4123-30 – Doosan Daewoo Excavator DH55 \/ DH150 \/ DH220 \/ DH300-5\/7\u003c\/h2\u003e\n\n\u003cp\u003eDirect OEM-specification replacement for the 2-pin 9.5mm high-current fuse protector connector used on Doosan and Daewoo excavator electrical harnesses. Cross-references Yazaki OEM numbers \u003cstrong\u003e7122-4123-30\u003c\/strong\u003e (male housing) and \u003cstrong\u003e7123-4123-30\u003c\/strong\u003e (female housing), also referenced as \u003cstrong\u003eDJ7021Y-9.5-11\/21\u003c\/strong\u003e. The 9.5mm pitch is designed for high-current fuse protection circuits — typically 30A–80A main power, starter, and hydraulic pump motor circuits on DH-series excavators. A corroded or heat-damaged fuse connector is a common cause of intermittent no-start and hydraulic system shutdown on Doosan equipment.\u003c\/p\u003e\n\n\u003ch2\u003eOEM Part Number Cross-Reference\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM Number\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7122-4123-30\u003c\/td\u003e\n\u003ctd\u003eMale housing (power supply side)\u003c\/td\u003e\n\u003ctd\u003eDoosan \/ Daewoo excavator fuse harness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7123-4123-30\u003c\/td\u003e\n\u003ctd\u003eFemale housing (load side)\u003c\/td\u003e\n\u003ctd\u003eDoosan \/ Daewoo excavator fuse harness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDJ7021Y-9.5-11\/21\u003c\/td\u003e\n\u003ctd\u003eAlternate cross-reference (DJ series)\u003c\/td\u003e\n\u003ctd\u003eHeavy equipment fuse protection circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePin Assignment – 2-Pin 9.5mm Fuse Protector Connector\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eTypical Wire Gauge\u003c\/th\u003e\n\u003cth\u003eFailure Symptom if Open\/Corroded\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eBattery \/ main power input (+12V or +24V)\u003c\/td\u003e\n\u003ctd\u003e6–8 AWG (high current)\u003c\/td\u003e\n\u003ctd\u003eNo-start; total electrical shutdown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eProtected output to load (starter \/ pump motor)\u003c\/td\u003e\n\u003ctd\u003e6–8 AWG (high current)\u003c\/td\u003e\n\u003ctd\u003eStarter inoperative; hydraulic pump no power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e2-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Pitch\u003c\/td\u003e\n\u003ctd\u003e9.5mm (high-current series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Numbers\u003c\/td\u003e\n\u003ctd\u003e7122-4123-30 \/ 7123-4123-30 \/ DJ7021Y-9.5-11\/21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Rating\u003c\/td\u003e\n\u003ctd\u003eUp to 80A per circuit (9.5mm terminal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Voltage\u003c\/td\u003e\n\u003ctd\u003e12V \/ 24V compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eHigh-temp PA66 nylon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFuse protector, main power, starter, hydraulic pump circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Equipment\u003c\/td\u003e\n\u003ctd\u003eDoosan \/ Daewoo DH-series excavators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eDoosan \/ Daewoo DH55-5 \/ DH55-7 – Main fuse and starter circuit connector\u003c\/li\u003e\n\u003cli\u003eDoosan \/ Daewoo DH60-5 \/ DH60-7 – Hydraulic pump power connector\u003c\/li\u003e\n\u003cli\u003eDoosan \/ Daewoo DH150-7 – Fuse protector harness\u003c\/li\u003e\n\u003cli\u003eDoosan \/ Daewoo DH220-5 \/ DH220-7 – Main power distribution connector\u003c\/li\u003e\n\u003cli\u003eDoosan \/ Daewoo DH300-5 \/ DH300-7 – High-current fuse circuit connector\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: My Doosan excavator won’t start — could it be the fuse connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A corroded or heat-damaged 2-pin 9.5mm fuse connector is a common cause of no-start on Doosan DH-series excavators. The high-current fuse circuit carries starter motor power — even partial corrosion on the 9.5mm terminal creates enough resistance to prevent the starter from drawing sufficient current. Inspect the connector for heat discoloration, melted housing, or green corrosion before replacing the starter motor or fuse.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 7122-4123-30 and 7123-4123-30?\u003c\/strong\u003e\u003cbr\u003eA: 7122-4123-30 is the male housing (power supply \/ battery side); 7123-4123-30 is the female housing (load \/ output side). Both are required for a complete connector repair. The -30 suffix denotes the Yazaki color\/variant code for this application.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this connector compatible with 24V excavator systems?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The 9.5mm Yazaki terminal is rated for both 12V and 24V systems. Doosan DH220 and DH300 series typically operate on 24V — this connector is compatible with both voltage systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are terminals included?\u003c\/strong\u003e\u003cbr\u003eA: Yes, high-current 9.5mm terminals are included with all variants.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"male with Pin \/ 1 Pcs","offer_id":47838273994997,"sku":"14:200004890#male with Pin;200001249:202408827#1 Pcs","price":14.74,"currency_code":"USD","in_stock":true},{"title":"female with Pin \/ 1 Pcs","offer_id":47838274027765,"sku":"14:200004889#female with Pin;200001249:202408827#1 Pcs","price":13.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/Sfaf0e0631012465fb216950678065bac6.webp?v=1773728397","url":"https:\/\/www.csldmcml.com\/products\/2-pin-9-5mm-fuse-protector-connector-oem-7122-4123-30-7123-4123-30-doosan-daewoo-excavator","provider":"Cable Parts Online","version":"1.0","type":"link"}