Fuses Littelfuse As the world’s #1 brand in circuit protection, we offer the broadest and deepest circuit protection portfolio backed by more than 80 years of application design experience. Visit Littelfuse ' Your Shopping CartBusiness Hours Monday – Friday: 7am – 4pm Having trouble identifying or finding a part? Call (802) 655-7090 or click here to complete our product finder form, we can help! Join Our Mailing List Get the latest information on promotions, products and events sponsored by Walsh. Name First Last Email* Customer Type* Commercial/Industrial Residential EmailThis field is for validation purposes and should be left unchanged.