The Keystone 3527C is a versatile midget fuse holder engineered for use with SPF (Solar Protection) fuses. Constructed with flame-resistant Nylon and featuring an optional cover, it provides robust protection and insulation for the fuse. The holder's design incorporates .030 Brass clips and operates within a temperature range of -58°F to +292°F (-50°C to +145°C). It's a reliable solution for applications requiring secure and efficient fuse management, commonly found in electrical panels and industrial equipment.