Thermal Cut-Offs Cement Resistors (FKU/FRU)
(FKU/FRU) Thermal Cut-Offs Resistor - Introduction
Ultimate Protection Thermal Cutoffs for High Power Applications
Fast-acting protection device for high-power applications combines thermal fuse element and resistor on a single substrate.
Token offers FKU (Wirewound Resistor + Thermal Cut-offs) and FRU (Metal Oxide Film Resistor + Thermal Cut-offs) two Series, both are a new concept in thermal fuse technology and are designed to protect against over-heating in electrical products.
The two active components, a thermal cutoff is a fusible alloy and a resistor is a voltage divider, both are surrounded by a ceramic cement with special resin.
Under normal operating temperatures the fusible alloy joins the two lead wires within the body of the cutoff and the power resistor acts as a normal function resistor. When the preset temperature of the cutoff is reached, the fusible alloy melts and with the aid of the special resin, complete cutoff is ensured.
By combining a thermal fuse element and resistor on a single substrate, Token has created a fast-acting ultimate protection device for high power applications up to 10A/250V.
Resistance range of FKU Wirewound Type Thermal Cut-offs is 1Ω~100Ω and FRU Metal Oxide Film Type Thermal Cut-offs is 110Ω~10KΩ. Both standard precision tolerance is J(±5%).
Our custom solutions are designed to address your need for technical and economic success in a timely manner. Contact us with your specific needs.
Download complete specification - Thermal Cut-Offs Resistors (FKU/FRU).
- Miniature size, Radial leaded form, Accurate fusing temperature, Current Rating: Up to 10Amp.
- Various temperature settings, Products with Pb-free Terminations and RoHS compliant.
- Economical by combining both function of a thermal fuse and a pulse resistor.
- Motors - fans, copiers, washing machines, air conditioners, compressors.
- Electronics - TVs, tape recorders, stereos, video recorders, fluorescent lamps, transformers, surge suppressors, computers, telecommunication equipment.
- Appliances - electric blankets, space heaters, stoves, irons, hair dryers, cookers, toaster ovens, clothes dryers, toasters, mixers, microwave ovens, crock pots.
(FKU, FRU) Specifications & Dimensions
Thermal Cut-Offs Cement Resistors |
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| Type | Dimension (Unit: mm) | |||||||
| W ± 1 | D ± 1 | H ± 1.5 | RM+2/-1 | h | D1(R terminal) | D2(F terminal) | ||
| FKU/FRU-5M | 13 | 9 | 25 | 5 | 4.5±1 | 0.8±0.1 | 2A:0.6 ±0.1
10A:1.0 ±0.1 |
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| FKU/FRU-7M | 13 | 9 | 38 | 5 | ||||
| FKU/FRU-10M | 16 | 12 | 35 | 7.5 | ||||
(FKU, FRU) Electrical Performance
| Fusing Temperature Protector | Rated Power at 25°C (W) | Resistance Range (Ω) | Tolerance (%) | |||||||
| MARK | Fusing Temperature(°C) |
Standard Current(A) | Standard Voltage(V) | 5M | 7M | 10M | FKU | FRU | FKU | FRU |
| A | 109+1/-3 | 10 | 250 | 1.2 | 1.4 | 2.0 | 1~100 | 110~10K | J(±5) K(±10) |
J(±5) |
| B | 129±4 | 1.6 | 2.0 | 2.5 | ||||||
| C | 152±4 | 1.6 | 2.0 | 2.5 | ||||||
| D | 188+3/-1 | 2.0 | 2.4 | 3.5 | ||||||
| E | 226+1/-3 | 2.0 | 2.4 | 3.5 | ||||||
| F | 95+3/-0 | 2 | 0.8 | 1.2 | ||||||
| G | 110±4 | 1.2 | 1.4 | |||||||
| H | 126±4 | 1.4 | 1.6 | |||||||
| N | 130±4 | 1.6 | 2.0 | |||||||
| M | 145±4 | 2.1 | 2.4 | |||||||
(FKU, FRU) Thermal Cut-Offs Circuit Breaker - Order Codes
| FRU | - | 5M | A | 10R | K | P | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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