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Underwriters Laboratoriesยฎ Inc. (UL) is an independent product safety certification organization Based in Northbrook, Illinois.
UL develops standards and test procedures for products, materials, components, assemblies, tools and equipment, chiefly dealing with product safety.
UL does not โapproveโ products. Rather it evaluates products, components, materials and systems for compliance to specific requirements, and permits acceptable products to carry a UL certification mark, as long as they remain compliant with the standards.
- Inrush current limiting thermistor
- Resistance of 2.5ฮฉ(at 25ยฐC)
- Maximum steady state current of 15A
- Maximum recommended energy of 90J
- Voltage ratings of 120VAC and 240VAC
- Body temperature of +172ยฐC at maximum current
- Inrush current limiting thermistor
- Resistance of 30ฮฉ ยฑ20% (at 25ยฐC)
- Maximum steady state current of 5A
- Maximum recommended energy of 80J
- Voltage ratings of 120VAC and 240VAC
- Body temperature of +172ยฐC at maximum current
- Inrush current limiting thermistor
- Resistance of 4ฮฉ (at 25ยฐC)
- Maximum steady state current of 14A
- Maximum recommended energy of 100J
- Voltage ratings of 120VAC and 240VAC
- Body temperature of +214ยฐC at maximum current
- Industry-standard Isolated RS-485/RS-422 transceiver
- 1ns pulse skew
- Low EMC footprint
- Isolation of 2.5 kVRMS
- Working voltage of 600VRMS
- Thermal shutdown protection
- UL 1577 approved; VDE V 0884-10 certified, meets or exceeds ANSI 422-B, EIA 485-A and ITU recommended V11
- 0.3″ 16-pin SOIC package
- Industry-standard Isolated RS-485 transceiver
- 1ns pulse skew
- Isolation of 2.5 kVRMS
- Thermal shutdown protection
- UL 1577 & IEC 61010-2001 approved; meets or exceeds ANSI RS-485 and ISO 8482:1987(E)
- 0.3″ 16-pin SOIC package
- Industry-standard Isolated RS-485 transceiver with handshake
- 1ns pulse skew
- Isolation of 2.5 kVRMS
- Thermal shutdown protection
- UL 1577 & IEC 61010-2001 approved; meets or exceeds ANSI RS-485 and ISO 8482:1987(E)
- 0.3″ 16-pin SOIC package
- Flat type metal clad wire wound resistor
- Resistance options from 1ฮฉ up to 1.1kฮฉ
- Power rating of 100W (on a heat sink)
- Tolerance options between ยฑ0.5% and ยฑ10.0%
- TCR of +260 ppm/ยฐC maximum
- For Non UL Approval see the IRF Series
- Flat type metal clad wire wound resistor
- Resistance options from 1ฮฉ up to 1.75kฮฉ
- Power rating of 150W (on a heat sink)
- Tolerance options between ยฑ0.5% and ยฑ10.0%
- TCR of +260 ppm/ยฐC maximum
- For Non UL Approval see the IRF Series
- Flat type metal clad wire wound resistor
- Resistance options from 1ฮฉ up to 2.2kฮฉ
- Power rating of 200W (on a heat sink)
- Tolerance options between ยฑ0.5% and ยฑ10.0%
- TCR of +260 ppm/ยฐC maximum
- For Non UL Approval see the IRF Series
- Flat type metal clad wire wound resistor
- Resistance options from 1ฮฉ up to 2.79kฮฉ
- Power rating of 250W (on a heat sink)
- Tolerance options between ยฑ0.5% and ยฑ10.0%
- TCR of +260 ppm/ยฐC maximum
- For Non UL Approval see the IRF Series
- Flat type metal clad wire wound resistor
- Resistance options from 1ฮฉ up to 3.5kฮฉ
- Power rating of 300W (on a heat sink)
- Tolerance options between ยฑ0.5% and ยฑ10.0%
- TCR of +260 ppm/ยฐC maximum
- For Non UL Approval see the IRF Series
- Flat type metal clad wire wound resistor
- Resistance options from 1ฮฉ up to 3.08kฮฉ
- Power rating of 400W (on a heat sink)
- Tolerance options between ยฑ0.5% and ยฑ10.0%
- TCR of +260 ppm/ยฐC maximum
- For Non UL Approval see the IRF Series
- Flat type metal clad wire wound resistor
- Resistance options from 1ฮฉ up to 2.46kฮฉ
- Power rating of 500W (on a heat sink)
- Tolerance options between ยฑ0.5% and ยฑ10.0%
- TCR of +260 ppm/ยฐC maximum
- For Non UL Approval see the IRF Series
- Metal clad wire wound resistor
- Option of flying leads (tab terminals are standard)
- Inductive or non-inductive design
- Insulation resistance of 20Mฮฉ minimum
- Temperature range of -55ยฐC up to +200ยฐC
- UL approved
- Extruded aluminium horizontal housing
- Short time overload of 5 x power rating is 5 seconds
- Metal clad wire wound resistor
- Option of flying leads (tab terminals are standard)
- Inductive or non-inductive design
- Insulation resistance of 20Mฮฉ minimum
- Temperature range of -55ยฐC up to +200ยฐC
- UL approved
- Extruded aluminium horizontal housing
- Short time overload of 10 x power rating is 5 seconds
- Precision shunt resistor
- 4-terminal metal-clad design
- Resistance values between 1.3333mฮฉ up to 3.3333mฮฉ
- Rated current of 30A, 40A, 50A or 75A
- Tolerance values of ยฑ0.1%, ยฑ0.5% or ยฑ1.0%
- Rated voltage 100mV
- UL Approved
