Bussmann
Bussmann GDB-630MA Glass Fuse 630mA 250V AC 35A 5 Pack
A pack of five fast-acting glass fuses rated 630 mA at 250 V AC with a 35 A interrupt rating
- Fast-acting protection clears faults quickly
- 35 A interrupt rating handles high fault currents
- 630 mA at 250 V AC suits low-power circuits
- 20 mm × 5 mm cylindrical glass body fits standard holders
- Pack of five fuses provides ready spares
Fast-Acting Glass Fuse for Low-Current Circuits
The Bussmann GDB-630MA is a 20 mm x 5 mm cylindrical glass fuse rated at 630 mA and 250 V AC. It is designed for fast-acting protection in electronic equipment, control panels and instrumentation where precise overcurrent interruption is required. The non-rejection style body fits standard 5 mm fuse holders and compatible HTB fuse blocks. Each pack contains five fuses for service stock or multi-point installations.
35 A Interrupt Rating at 250 V AC
The fuse carries a 35 A interrupting capacity at its rated 250 V AC, providing reliable clearing of moderate fault currents in low-power mains circuits. It is suitable for protecting transformer primaries, power supply inputs and similar loads that stay well within the 630 mA continuous rating. The device is not intended for high-energy industrial distribution or DC applications beyond the stated AC rating. Users must verify that prospective short-circuit current does not exceed the 35 A limit.
Compliance and Cross-Reference
The GDB series meets CE and UL Guide JDYX2 requirements, supporting regulatory acceptance in a wide range of equipment designs. Direct equivalents include Littelfuse 217, Mersen GSB and Bussmann S500 series, allowing straightforward substitution during maintenance or bill-of-materials consolidation. The glass body permits visual inspection of the element after a fault event. Buyers needing higher current ratings, different time-current curves or DC voltage ratings should select an alternative fuse family.
Highlights
- Fast-acting protection clears faults quickly
- 35 A interrupt rating handles high fault currents
- 630 mA at 250 V AC suits low-power circuits
- 20 mm × 5 mm cylindrical glass body fits standard holders
- Pack of five fuses provides ready spares
Specifications
| Brand | EATON BUSSMANN |
|---|
Questions about this item
Will the 20 mm length and 5 mm diameter fit the HTB fuse block I already use?
Yes, the cylindrical body measures 20 mm long by 5 mm in diameter, which matches the HTB fuse block series listed as compatible.
How can I confirm the fast-acting response is working after installation?
Apply a controlled overload above 630 mA at 250 V AC; the element should interrupt within the fast-acting time-current curve and show a visible break in the glass tube.
Does the 5-pack include any fuse holders or blocks, or must I buy them separately?
The package contains only five GDB-630MA glass fuses; compatible HTB fuse blocks or holders are sold separately.
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