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Siemens 5SB4 21 DIII 50A 500V gL/gG Diazed Fuse Links Box Of 5 New
Siemens 5SB4 21 DIII 50A 500V gL/gG Diazed Fuse Links Box Of 5 New
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Siemens Diazed fuse links, type 5SB4 21, rated 50A at 500V AC, utilization category gL/gG, in original factory box of five pieces. These fuses are new and never used, showing only light storage marks on the metal caps.
Item details
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Brand: Siemens
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Model: 5SB4 21 (5SB421 Diazed fuse link series)
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Type: Diazed DIII bottle fuse link for cable and line protection
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Size: DIII, E33 thread size
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Current rating: 50 A
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Voltage rating: 500 V AC (also suitable up to 500 V DC in many applications – see datasheet)
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Utilization category: gL/gG general‑purpose fuse link
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Application: Cable and line protection in low‑voltage distribution and control panels
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Approvals: CE marked; designed according to IEC/DIN standards for Diazed systems
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Quantity: 1 box containing 5 fuse links
Condition
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New, never installed fuses
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Box opened for inspection/photos; inner contents appear unused
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Some dust and minor oxidation spots visible on fuse end caps from shelf storage
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Outer cardboard packaging shows light handling wear, small marks and edge dents
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No datasheet or additional documentation included in the box
Notes
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Genuine Siemens SENTRON Diazed fuses, suitable as direct replacements where DIII 50A gG links are specified.
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Buyer should confirm compatibility with their existing DIII (E33) fuse bases and local electrical codes before installation.
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Installation and replacement should be performed by qualified electrical personnel.
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