For 1.25A circuit protection, 02131.25MXP is a Littelfuse 213 Series option; cartridge, mx bulk packaging, with published series ratings and ordering-specific configuration.
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Littelfuse identifies 02131.25MXP as a 1.25A member of the 213 Series, intended for time-lag 5×20mm glass fuse applications. The selected part uses cartridge, mx bulk packaging. The full ordering code specifies cartridge, mx bulk packaging, so package and lead details should be matched exactly. It is rated 250 V AC and the datasheet lists 35 A @ 250 VAC interrupting capability. Nominal melting I²t is 27.15 A²s. Verify ambient derating, coordination and the exact manufacturer ordering code against the current Littelfuse datasheet before design-in.
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