Part Number R21-4-10.0A-30067-1-V Circuit Breaker Accessories in stock with ready to ship. Get an instant quote for Sensata Technologies Inc part number R21-4-10.0A-30067-1-V by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for R21-4-10.0A-30067-1-V. Our dedicated account manager will get back to you within 15 minutes.