We have access to a large inventory of fuses from various manufacturers. If needed, we can cross reference your parts, and get replacements quickly. Our knowledge is built from years of experience in the metric industry. We use that knowledge to locate the correct part for your application, to get you out of trouble fast.
You may already be familiar with Maryland Metrics from some of our other activities. We offer all types of Metric Sized mechanical, electrical, and electromechanical products such as terminal blocks, circuit breakers, nonmetallic enclosures, relays, mounting hardware and other control devices which are used extensively in control, protection, power distribution and automation applications.
Maryland Metrics fuse products represent "state-of-the-art" electrical and electronic technology. They meet diverse international and national electrical standards, such as IEC, UL, CSA, JIS, etc.
These products are advantageous to any company that is interested in upgrading their devices, machinery and equipment to meet world standards, and to save space and assembly time as well!
Maryland Metrics has been offering Metric sized fasteners and replacement parts for European and Japanese equipment since we started in 1971.
Most European and Japanese fuses offered meet IEC, DIN, VDE, JIS and other European and Japanese standards. Many European fuse types are standardized, reducing stocking requirements. For example, Diazed (commonly called "Bottle" ) Fuses of any brand are interchangeable between brands for the same type and size.
Also, the fuse tips have different diameters, depending on their current rating. The diameter of the tip matches the diameter of the hole in the Adapter Screw to insure that no fuse with a higher rating than intended for the circuit can be installed. This prevents damage to the circuit or equipment the fuse protects.
Additionally, fuses and Adapter Screws are color coded to avoid mismatching; for example: 10 Amp Diazed fuses have red pop-out indicators on their head, matching the red ring of the 10 Amp Adapter Screw. When a Diazed fuse has blown, the color coded indicator on the head of the fuse will pop out, giving visible indication through a glass window in the Screw Cap.
The Fuse is held in place by the Screw Cap, which is screwed into the Fuse Base. Diazed Fuse Bases are available in one and three pole designs. Fuse Bases can be panel mounted or snapped onto a standard 35mm DIN rail.
Operating Classes
gL/gG - Slow Blow Protect cable and conductors from damage due to overloads and short circuits. Typical Markings.-'T', Trage, gl/gG, snail symbol
- Fast Blow Fast Blow fuses are typically used to protect equipment.
Typical Markings.- "F, Flink, (the absence of the snail symbol)
gR - Super Fast Blow Typically used for protecting semiconductors like diodes, SCRS, etc. Current limiting.
Typical Markings.- UtraRapid ,
Silzed , Recticur, gR,
*'For DIV/DV fuses, please consult us
Also, the fuse tips have different diameters, depending on their current rating. The diameter of the tip matches the diameter of the hole in the Adapter Ring to insure that no fuse with a higher rating than intended for the circuit can be installed. This prevents damage to the circuit or equipment the fuse protects. Additionally, fuses and Adapter Rings are color coded to avoid mismatching; for example: 10 Amp Neozed fuses have red pop-out indicators on their head, matching the red 10 Amp Adapter Ring.
When a Neozed fuse has blown, the color coded indicator on the head of the fuse will pop out, giving visible indication through a glass window in the Screw Cap.
The Fuse is held in place by the Screw Cap, which is screwed into the Fuse Base. Neozed Fuse Bases are available in one and three pole designs. Fuse Bases can be panel mounted or snapped onto a standard 35mm DIN rail.
Operating Classes
gl/gG - Slow Blow Protect cable and conductors from damage due to overload and short circuits.
Typical Markings: gl/gG
gR - Super Fast Blow Protects semiconductors like diodes, SCRS, etc. Current limiting super fast blow characteristic for short circuit protection.
Typical Markings: Ultra Rapid, Recticur, gR,
They are available in four sizes with a current range from 1 to 100 Amps. Cylinder Fuses have metal caps at both ends that assure positive contact.
Operating Class
gl -Line Protection Slow Blow, typically used for power distribution or resistive loads.
Typical Markings: gl aM - Motor Protection Fast acting short circuit protection, but slow acting overload protection.
Markings: aM
gR - Semiconductor Protection Typically used for protecting semiconducors like diodes, SCR's etc. Current limiting, super fast blow.
Typical Markings: Ultra Rapid , gR,
NH fuses have knife blades at both ends , which mount into one or three pole Fuse Bases. Fuse Bases can be panel or DIN rail mounted.
Operating Classes gL/gG - Line Protection Slow, typically used for distribution circuits or resistive loads.
Typical Markings: gl/gG
aM - Motor Protection Fast acting short circuit protection, but slow acting overload protection. Typical Markings: aM
aR - Semiconductor Protection Partial range, short circuit protection for devices such as diodes, SCRS, etc.
Typical Markings: Ultra Rapid ,
Silcu , Sitor ,
Recticur ,Protistor , aR,
gR - Semiconductor Protection Full range overload and short circuit protection for devices such as diodes, SCRS, etc.
Typical Markings: Ultra Rapid ,
Silcu , Sitor ,
Recticur , Protistor , gR,
SEMICONDUCTOR FUSES
Maryland Metrics offers Semiconductor Fuses
in several types:
The Semiconductor Fuses offered comply with IEC, DIN and VDE standards. They are available in two super fast characteristics.
Operating Classes
gR - Full Range Protection Overload and short circuit protection.
Typical Markings: Ultra Rapid ,
Silized , Silcu , Sitor ,
Recticur , Protistor , gR,
aR - Partial Range Protection Short circuit protection only. Faster acting than full range fuses.
Typical Markings: Ultra Rapid ,
Silized , Silcu , Sitor ,
Recticur , Protistor , aR,
Operating Class aR - Partial Range Protection (VDE 0636 / IEC 269 ) Short circuit protection only. Typical Markings: Ultra Rapid , Silcu , Protistor , aR,
Square Body Fuses are available in three sizes with knife blades in two fixing lengths, 80mm (3.15 in.) and 110mm (4.33 in.). They can be supplied with a Flap Indicator or a Center Indicator for visual trip indication. The Center Indicator has a provision for mounting an Adapter and Microswitch for remote indication.
The Semiconductor Fuses offered here comply with IEC, DIN and VDE.
Operating Class aR - Partial Range Protection (VDE 0636 / IEC 269 ) Short circuit protection only.
Typical Markings: Ultra Rapid , Silcu
Square Body Fuses are available in three sizes with threaded holes in the metal end caps. They can be supplied with a Flap Indicator or a Center Indicator for visual trip indication. The Center Indicator has a provision for mounting an Adapter and Microswitch for remote indication.
The Semiconductor Fuses offered here comply with IEC, DIN and VDE.
Operating Class aR - Partial Range Protection (VDE 0636 / IEC 269)
The Semiconductor Fuses offered comply with IEC, DIN and VDE standards. They are available in two super fast characteristics.
Operating Classes
(VDE 0636 / IEC 269)
gR - Full Range Protection
Overload and short circuit protection.
Typical Markings: Ultra Rapid , Silcu ,
Recticur , Protistor , gR,
aR - Partial Range Protection
Short circuit protection only.
Faster acting than full range fuses.
Typical Markings: Ultra Rapid , Silcu ,
Recticur , Protistor , aR,
