SSQ 2 /5K

Response Time:	Fast
DC Cold Resistance:	0.039 Ohms
Size / Dimension:	0.240" L x 0.100" W x 0.100" H (6.10mm x 2.54mm x 2.54mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CE, CSA, cULus
Melting I²t:	1
Breaking Capacity @ Rated Voltage:	50A AC, 300A DC
Mounting Type:	Surface Mount
Package / Case:	2-SMD, Square End Block
Series:	SSQ
Voltage Rating - DC:	125V
Voltage Rating - AC:	125V
Current Rating:	2A
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Fuses: SSQ 2 /5K Application Field and Working Principle

SSQ 2 /5K, also known as Supplementary Protection Fuse, mainly used as triggering devices on direct current power sources. It is used in conjunction with branch protection devices such as switches, circuit breakers & disconnectors, as well as overcurrent protective devices. The function of the SSQ 2 /5K is to protect personnel, equipment and the environment from the hazards of excessive electrical current.

SSQ 2 /5K Working Principle

SSQ 2 /5K is designed to blow or open before other devices in the system can be damaged. This fuse works by using a thermal and chromic element embedded inside the fuse body. This element heats up when the current passing through the fuse is higher than the rated value. As the element continues to heat up, it expands and eventually pushes up the contact arm shut off contact. When the contact arm shuts off contact, the circuit is cut off and the electrical current is reduced to safe levels.

SSQ 2 /5K Application Field

The SSQ 2 /5K is used in many applications, such as air conditioning, air handling, industry, motor control centre, cable & conduit systems, fire safety, UPS, rail transport, circuit boards, LED lighting and industrial power systems. It is also widely used in electric vehicles such as electric cars, forklifts and scooters, as well as in offshore and marine applications.The SSQ 2 /5K is typically used in conjunction with other devices such as switches, disconnectors, circuit breakers and overcurrent protective devices. In cases where several loads are connected to a single power source, the fuse will protect each load individually and ensure that no overloading of current occurs.The SSQ 2 /5K can be used in both AC and DC power systems. It is also suitable for a variety of voltage levels, from 12 to 600 V, and it is designed to operate at both normal and transient overcurrents.In addition to the safety benefits, the SSQ 2 /5K also offers a number of other advantages, such as a low melting temperature, fast blow time-lag and high breaking capacity. This allows for a greater number of selective and autonomous system coordination, with fewer devices required for protection.

Conclusion

The SSQ 2 /5K is a popular and reliable supplementary protection fuse. It is designed to blow or open before other devices in the system can be damaged, and it is suitable for a variety of voltage levels. In addition to the safety benefits, the SSQ 2 /5K also offers a number of other advantages, such as a low melting temperature, fast blow time-lag and high breaking capacity. With these benefits, the SSQ 2 /5K is widely used in a variety of applications, from air conditioning and industrial power systems to electric vehicles and circuit boards.

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