Square D A21.3 Thermal Unit Type S/A Class 20, Melting Alloy, Motor Tripping 20
Square D A21.3 Thermal Unit Type S/A Class 20, Melting Alloy, Motor Tripping 20
- MPN: A21.3
- UPC: 785901585510
- PPN: SCH-A21.3
Spec sheet
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CAD$49.86/ EA
Description
Thermal units are intended to protect motors, controllers, and branch circuit conductors against excessive heating due to prolonged motor over currents up to and including locked rotor currents. Protection of the motor and the other branch circuit components from higher currents, due to short circuits or grounds, is a function of the branch circuit fuses or circuit breakers. Class 20 thermal units respond to overload current conditions according to trip curves. These thermal units will trip in 20 seconds or less on overload conditions. The proper thermal unit is selected using the motor full load current and a selection table. These thermal units have a one piece construction. The motor current passes through a small heater winding within these thermal units. Under overload conditions, the heat causes a special solder to melt allowing a ratchet wheel to spin free thus opening the control circuit contacts and opening the motor contacts.
Specifications
Important Information Attributes
- Persona Type Ids
- EU, LC, OM, OM8, PB, SC
- Market Segmentation Id
- COMMERCIAL, INDUSTRIAL
- Carbon Footprint Of The Distribution Phase A4
- 0.015062784881700087, 0 kg CO2 eq.
- Carbon Footprint Of The Installation Phase A5
- 0.0060760025185404255, 0 kg CO2 eq.
- Carbon Footprint Of The Use Phase B2 B3 B4 B6
- 13 kg CO2 eq., 12.638798994081128
- Local Publishable Date
- 2025-11-13
- Return Indicator
- Y
- Stock Policy
- 1
- Scope Perimeter
- Outside of Europe
- Reach Full Compliance Status
- Reference contains Substances of Very High Concern above the threshold
- Reach Compliance Directive
- Reference contains Substances of Very High Concern above the threshold
- Rohs Eur Status
- Compliant By Exemption
- China Rohs In Scope
- No
- With Recycled Cardboard
- Yes
- Product Contributes To Saved And Avoided Emissions
- No
- Tier
- 1
- Function Option
- Standard
- Energy Efficiency Optimized
- False
- Product Availability
- Stock - Normally stocked in distribution facility
- Returnability
- Yes
- Sustainable Packaging
- No
- Total Lifecycle Carbon Footprint
- 13 kg CO2 eq.
- Pep Code
- ENVPEP2508030EN
- Pep Verification Date
- 2025-10-08
- Psr Version
- PSR-0005-ed3.1-EN-2023 12 08
- Data Source
- extrapolated product
- Functional Unit Quantity
- 1
- Product Weight In G2
- 18.144
- Energy Model Manufacturing A1 A3 2
- Electricity Mix; Low voltage; 2020; United States, US
- Energy Model Use B6 2
- Electricity Mix; Low voltage; 2020; United States, US
- Recyclability Potential In 2
- 86
Persona Type NamesEnd User, Contractor, Original Equipment Manufacturer, OEM - Control Panelbuilder, Panel Builder, Electrician
Market SegmentationCommercial, Industrial
Carbon Footprint Of The End Of Life Phase C1 To C40 kg CO2 eq., 0.02152658808101991
Carbon Footprint Of The Manufacturing Phase A1 To A30.1 kg CO2 eq., 0.09658369691863965
Local Data StatusPublishable
Global Commercial StatusCommercialised
Stocking FlagY
Legacy Weee ScopeOut
Eoli Availability DisplayNo need of specific recycling operations
Reach Full Compliance Status IdCONTAINS_SVHC
Rohs Eur In ScopeNo
Rohs Eur Full Compliance StatusCompliant By Exemption
China Rohs Label7
Without Single Use PlasticYes
Tier Id1
Function Option IdSTANDARD
Product Kit IdentifierN
Motor Tripping Class20
Range Of ProductA
Software Versionv6.2.5-6
Thermal Overload Typemelting alloy
Warranty In Months18
Database Version2024-01
Pcr VersionPEP-PCR-ed4-2021 09 06
Type Of Verification For The PepIndependent internal review
Functional Unit DescriptionOther switchgear and controlgear solutions mentioned in the scope (e.g. fuses TC32, all-or-nothing relays TC94, Measuring relays and protection equipment TC95), apply the general rules of PCR and mention in the accompanying report the functional unit, the reference product characteristics, the reference lifetime and the use scenario which are applied consistently with the relevant IEC technical standards.
Functional Unit Unitunit
Reference Lifetime In Y220
Energy Model Installation A5 2No energy used
Energy Model End Of Life C1 C4 2Global, European and French datasets are used.
Offer Owner Code190788
Environment Attributes Main
- China Rohs Regulation
- Product out of China RoHS scope , Product out of China RoHS scope. Substance declaration for your information.
- Recycled Metal Content At Cr Level
- 0 %
- Carbon Footprint
- 12.778048066481029
- Eu Rohs Directive
- Compliant By Exemption
- Packaging Without Single Use Plastic
- Yes
- Pep Code
- ENVPEP2508030EN
- Pcr Version
- PEP-PCR-ed4-2021 09 06
- Type Of Verification For The Pep
- Independent internal review
Take BackNej
Mercury FreeYes
Environmental DisclosureENVPEP2508030EN
Packaging Made With Recycled CardboardYes
Reach RegulationReference contains Substances of Very High Concern above the threshold
Pep Verification Date2025-10-08
Psr VersionPSR-0005-ed3.1-EN-2023 12 08
Contractual Warranty Attributes
- Warranty Period
- 18 months
Warranty18 months
General Attributes
- Range Of Product
- A
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