Data records

Name: Circuit Breaker Reference data records
Creator: Circuit Breaker Reference
License: https://www.circuitbreakerreference.com/license/

Each statement in Circuit Breaker Reference is recorded as a data record with its source, verification date, review status and history. The index lists 70 records by subject.

Test methods

Bolted connection resistance

Data records for Bolted connection resistance.
Record	Statement
tests.bolted-connection-resistance.equipment.breaker.acceptance	Bolted Connection Resistance is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.B.1 of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.
tests.bolted-connection-resistance.equipment.breaker.maintenance	Bolted Connection Resistance is specified for oil and vacuum automatic circuit reclosers in maintenance testing at clause 7.24.1.B.1 of ANSI/NETA MTS-2023. Value: oil and vacuum automatic circuit reclosers.

Bushing power factor and capacitance

Data records for Bushing power factor and capacitance.
Record	Statement
tests.bushing-power-factor-and-capacitance.equipment.breaker.acceptance	Bushing Power Factor and Capacitance is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.B.8 of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.
tests.bushing-power-factor-and-capacitance.equipment.breaker.maintenance	Bushing Power Factor and Capacitance is specified for oil and vacuum automatic circuit reclosers in maintenance testing at clause 7.24.1.B.8 of ANSI/NETA MTS-2023. Value: oil and vacuum automatic circuit reclosers.

Circuit Breaker Timing and Travel

Data records for Circuit Breaker Timing and Travel.
Record	Statement
tests.circuit-breaker-timing-and-travel.equipment.ats-transfer.acceptance	Circuit Breaker Timing and Travel is specified for automatic transfer switches in emergency systems in acceptance testing at clause 7.22.3.B.8 of ANSI/NETA ATS-2025. Value: automatic transfer switches in emergency systems.
tests.circuit-breaker-timing-and-travel.equipment.ats-transfer.maintenance	Circuit Breaker Timing and Travel is specified for automatic transfer switches in emergency systems in maintenance testing at clause 7.22.3.B.7 of ANSI/NETA MTS-2023. Value: automatic transfer switches in emergency systems.
tests.circuit-breaker-timing-and-travel.equipment.breaker.acceptance	Circuit Breaker Timing and Travel is specified for medium-voltage vacuum circuit breakers in acceptance testing at clause 7.6.3.A.7, 7.6.3.A.12 of ANSI/NETA ATS-2025. Value: medium-voltage vacuum circuit breakers.
tests.circuit-breaker-timing-and-travel.governed-by.ansi-neta-ats	Circuit Breaker Timing and Travel is addressed in ANSI/NETA ATS-2025.
tests.circuit-breaker-timing-and-travel.governed-by.ansi-neta-mts	Circuit Breaker Timing and Travel is addressed in ANSI/NETA MTS-2023.
tests.circuit-breaker-timing-and-travel.title	The test method is named Circuit Breaker Timing and Travel. Value: Circuit Breaker Timing and Travel.

Contact resistance

Data records for Contact resistance.
Record	Statement
tests.contact-resistance.equipment.breaker.acceptance	Contact Resistance is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.B.3 of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.
tests.contact-resistance.equipment.breaker.maintenance	Contact Resistance is specified for oil and vacuum automatic circuit reclosers in maintenance testing at clause 7.24.1.B.3 of ANSI/NETA MTS-2023. Value: oil and vacuum automatic circuit reclosers.

Control and functional verification

Data records for Control and functional verification.
Record	Statement
tests.control-and-functional-verification.equipment.breaker.acceptance	Control and Functional Verification is specified for low-voltage insulated-case circuit breakers in acceptance testing at clause 7.6.1.1.2.B.8 of ANSI/NETA ATS-2025. Value: low-voltage insulated-case circuit breakers.
tests.control-and-functional-verification.equipment.breaker.maintenance	Control and Functional Verification is specified for low-voltage power circuit breakers in maintenance testing at clause 7.6.1.2.B.11 of ANSI/NETA MTS-2023. Value: low-voltage power circuit breakers.

Dielectric withstand

Data records for Dielectric withstand.
Record	Statement
tests.dielectric-withstand.equipment.breaker.acceptance	Dielectric Withstand is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.B.11 of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.
tests.dielectric-withstand.equipment.breaker.maintenance	Dielectric Withstand is specified for oil and vacuum automatic circuit reclosers in maintenance testing at clause 7.24.1.B.10 of ANSI/NETA MTS-2023. Value: oil and vacuum automatic circuit reclosers.

Dynamic Contact Resistance

Data records for Dynamic Contact Resistance.
Record	Statement
tests.dynamic-contact-resistance.equipment.breaker.acceptance	Dynamic Contact Resistance is specified for medium-voltage and high-voltage oil circuit breakers in acceptance testing at clause 7.6.2.B.4 of ANSI/NETA ATS-2025. Value: medium-voltage and high-voltage oil circuit breakers.
tests.dynamic-contact-resistance.equipment.breaker.maintenance	Dynamic Contact Resistance is specified for medium-voltage and high-voltage oil circuit breakers in maintenance testing at clause 7.6.2.B of ANSI/NETA MTS-2023. Value: medium-voltage and high-voltage oil circuit breakers.
tests.dynamic-contact-resistance.governed-by.ansi-neta-ats	Dynamic Contact Resistance is addressed in ANSI/NETA ATS-2025.
tests.dynamic-contact-resistance.governed-by.ansi-neta-mts	Dynamic Contact Resistance is addressed in ANSI/NETA MTS-2023.
tests.dynamic-contact-resistance.title	The test method is named Dynamic Contact Resistance. Value: Dynamic Contact Resistance.

Ground fault protection performance

Data records for Ground fault protection performance.
Record	Statement
tests.ground-fault-protection-performance.equipment.breaker.acceptance	Ground Fault Protection Performance is specified for low-voltage molded-case circuit breakers in acceptance testing at clause 7.6.1.1.1.B.5 of ANSI/NETA ATS-2025. Value: low-voltage molded-case circuit breakers.
tests.ground-fault-protection-performance.equipment.breaker.maintenance	Ground Fault Protection Performance is specified for low-voltage power circuit breakers in maintenance testing at clause 7.6.1.2.B.7 of ANSI/NETA MTS-2023. Value: low-voltage power circuit breakers.

Insulation power factor dissipation factor

Data records for Insulation power factor dissipation factor.
Record	Statement
tests.insulation-power-factor-dissipation-factor.equipment.breaker.acceptance	Insulation Power Factor Dissipation Factor is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.B.7 of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.
tests.insulation-power-factor-dissipation-factor.equipment.breaker.maintenance	Insulation Power Factor Dissipation Factor is specified for oil and vacuum automatic circuit reclosers in maintenance testing at clause 7.24.1.B.7 of ANSI/NETA MTS-2023. Value: oil and vacuum automatic circuit reclosers.

Insulation resistance

Data records for Insulation resistance.
Record	Statement
tests.insulation-resistance.equipment.breaker.acceptance	Insulation Resistance is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.B.2 of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.
tests.insulation-resistance.equipment.breaker.maintenance	Insulation Resistance is specified for oil and vacuum automatic circuit reclosers in maintenance testing at clause 7.24.1.B.2 of ANSI/NETA MTS-2023. Value: oil and vacuum automatic circuit reclosers.

Primary Current Injection Trip Test

Data records for Primary Current Injection Trip Test.
Record	Statement
tests.primary-current-injection-trip-test.equipment.breaker.acceptance	Primary Current Injection Trip Test is specified for low-voltage molded-case circuit breakers in acceptance testing at clause 7.6.1.1.1.B.3 of ANSI/NETA ATS-2025. Value: low-voltage molded-case circuit breakers.
tests.primary-current-injection-trip-test.equipment.breaker.maintenance	Primary Current Injection Trip Test is specified for low-voltage power circuit breakers in maintenance testing at clause 7.6.1.2.B.5 of ANSI/NETA MTS-2023. Value: low-voltage power circuit breakers.
tests.primary-current-injection-trip-test.governed-by.ansi-neta-ats	Primary Current Injection Trip Test is addressed in ANSI/NETA ATS-2025.
tests.primary-current-injection-trip-test.governed-by.ansi-neta-mts	Primary Current Injection Trip Test is addressed in ANSI/NETA MTS-2023.
tests.primary-current-injection-trip-test.title	The test method is named Primary Current Injection Trip Test. Value: Primary Current Injection Trip Test.

Resistor and coil resistance

Data records for Resistor and coil resistance.
Record	Statement
tests.resistor-and-coil-resistance.equipment.breaker.acceptance	Resistor and Coil Resistance is specified for medium-voltage air circuit breakers in acceptance testing at clause 7.6.1.3.B.9 of ANSI/NETA ATS-2025. Value: medium-voltage air circuit breakers.
tests.resistor-and-coil-resistance.equipment.breaker.maintenance	Resistor and Coil Resistance is specified for medium-voltage air circuit breakers in maintenance testing at clause 7.6.1.3.B.10 of ANSI/NETA MTS-2023. Value: medium-voltage air circuit breakers.

Trip and Close Coil Minimum Pickup

Data records for Trip and Close Coil Minimum Pickup.
Record	Statement
tests.trip-and-close-coil-minimum-pickup.equipment.breaker.acceptance	Trip and Close Coil Minimum Pickup is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.B.6 of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.
tests.trip-and-close-coil-minimum-pickup.equipment.breaker.maintenance	Trip and Close Coil Minimum Pickup is specified for oil and vacuum automatic circuit reclosers in maintenance testing at clause 7.24.1.B.6 of ANSI/NETA MTS-2023. Value: oil and vacuum automatic circuit reclosers.
tests.trip-and-close-coil-minimum-pickup.governed-by.ansi-neta-ats	Trip and Close Coil Minimum Pickup is addressed in ANSI/NETA ATS-2025.
tests.trip-and-close-coil-minimum-pickup.governed-by.ansi-neta-mts	Trip and Close Coil Minimum Pickup is addressed in ANSI/NETA MTS-2023.
tests.trip-and-close-coil-minimum-pickup.title	The test method is named Trip and Close Coil Minimum Pickup. Value: Trip and Close Coil Minimum Pickup.

Trip Unit Secondary Injection

Data records for Trip Unit Secondary Injection.
Record	Statement
tests.trip-unit-secondary-injection.equipment.breaker.acceptance	Trip Unit Secondary Injection is specified for low-voltage molded-case circuit breakers in acceptance testing at clause 7.6.1.1.1.B.7 of ANSI/NETA ATS-2025. Value: low-voltage molded-case circuit breakers.
tests.trip-unit-secondary-injection.equipment.breaker.maintenance	Trip Unit Secondary Injection is specified for low-voltage power circuit breakers in maintenance testing at clause 7.6.1.2.B.9 of ANSI/NETA MTS-2023. Value: low-voltage power circuit breakers.
tests.trip-unit-secondary-injection.governed-by.ansi-neta-ats	Trip Unit Secondary Injection is addressed in ANSI/NETA ATS-2025.
tests.trip-unit-secondary-injection.governed-by.ansi-neta-mts	Trip Unit Secondary Injection is addressed in ANSI/NETA MTS-2023.
tests.trip-unit-secondary-injection.title	The test method is named Trip Unit Secondary Injection. Value: Trip Unit Secondary Injection.

Vacuum interrupter integrity

Data records for Vacuum interrupter integrity.
Record	Statement
tests.vacuum-interrupter-integrity.equipment.breaker.acceptance	Vacuum Interrupter Integrity is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.B.10 of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.
tests.vacuum-interrupter-integrity.equipment.breaker.maintenance	Vacuum Interrupter Integrity is specified for oil and vacuum automatic circuit reclosers in maintenance testing at clause 7.24.1.B.9 of ANSI/NETA MTS-2023. Value: oil and vacuum automatic circuit reclosers.

Vacuum interrupter mac test

Data records for Vacuum interrupter mac test.
Record	Statement
tests.vacuum-interrupter-mac-test.equipment.breaker.acceptance	Vacuum Interrupter MAC Test is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.B.9 of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.

Visual and mechanical inspection

Data records for Visual and mechanical inspection.
Record	Statement
tests.visual-and-mechanical-inspection.equipment.breaker.acceptance	Visual and Mechanical Inspection is specified for oil and vacuum automatic circuit reclosers in acceptance testing at clause 7.24.1.A of ANSI/NETA ATS-2025. Value: oil and vacuum automatic circuit reclosers.
tests.visual-and-mechanical-inspection.equipment.breaker.maintenance	Visual and Mechanical Inspection is specified for oil and vacuum automatic circuit reclosers in maintenance testing at clause 7.24.1.A of ANSI/NETA MTS-2023. Value: oil and vacuum automatic circuit reclosers.

Equipment classes

Low-voltage circuit breakers

Data records for Low-voltage circuit breakers.
Record	Statement
equip.low-voltage-circuit-breakers.acc.contact-resistance	ANSI/NETA ATS-2025 calls for contact or pole resistance measurements on molded-case, insulated-case and low-voltage power circuit breakers at acceptance.
equip.low-voltage-circuit-breakers.acc.control-functional	ANSI/NETA ATS-2025 calls for verification of control and functional operation on insulated-case and low-voltage power circuit breakers at acceptance.
equip.low-voltage-circuit-breakers.acc.ground-fault	ANSI/NETA ATS-2025 calls for tests of ground-fault protection functions on molded-case, insulated-case and low-voltage power circuit breakers at acceptance.
equip.low-voltage-circuit-breakers.acc.insulation-resistance	ANSI/NETA ATS-2025 calls for insulation resistance tests on molded-case, insulated-case and low-voltage power circuit breakers at acceptance.
equip.low-voltage-circuit-breakers.acc.primary-injection	ANSI/NETA ATS-2025 calls for trip tests by primary current injection on molded-case, insulated-case and low-voltage power circuit breakers at acceptance.
equip.low-voltage-circuit-breakers.acc.secondary-injection	ANSI/NETA ATS-2025 calls for secondary injection tests of the trip unit on molded-case, insulated-case and low-voltage power circuit breakers at acceptance.
equip.low-voltage-circuit-breakers.acc.visual-mechanical	ANSI/NETA ATS-2025 opens its sections on molded-case, insulated-case and low-voltage power circuit breakers with visual and mechanical inspection.
equip.low-voltage-circuit-breakers.ats-sections	ANSI/NETA ATS-2025 treats low-voltage circuit breakers in separate sections for molded-case breakers (7.6.1.1.1), insulated-case breakers (7.6.1.1.2) and power circuit breakers (7.6.1.2).
equip.low-voltage-circuit-breakers.ats-tables	The ANSI/NETA ATS-2025 sections on low-voltage circuit breakers refer to Table 100.1 for insulation resistance, to Table 100.7 for inverse-time trip testing of molded-case breakers and to Table 100.8 for instantaneous trip tolerances.
equip.low-voltage-circuit-breakers.definition	A low-voltage circuit breaker is a circuit breaker built for low-voltage power circuits, a class that takes in molded-case, insulated-case and low-voltage power circuit breakers.
equip.low-voltage-circuit-breakers.mnt.coil-pickup	ANSI/NETA MTS-2023 calls for minimum pickup tests of trip and close coils on insulated-case and molded-case breakers in maintenance testing.
equip.low-voltage-circuit-breakers.mnt.contact-resistance	ANSI/NETA MTS-2023 calls for contact or pole resistance measurements on insulated-case, molded-case and low-voltage power circuit breakers in maintenance testing.
equip.low-voltage-circuit-breakers.mnt.control-functional	ANSI/NETA MTS-2023 calls for verification of control and functional operation on low-voltage power circuit breakers in maintenance testing.
equip.low-voltage-circuit-breakers.mnt.ground-fault	ANSI/NETA MTS-2023 calls for tests of ground-fault protection functions on insulated-case, molded-case and low-voltage power circuit breakers in maintenance testing.
equip.low-voltage-circuit-breakers.mnt.insulation-resistance	ANSI/NETA MTS-2023 calls for insulation resistance tests on insulated-case, molded-case and low-voltage power circuit breakers in maintenance testing.
equip.low-voltage-circuit-breakers.mnt.primary-injection	ANSI/NETA MTS-2023 calls for trip tests by primary current injection on insulated-case, molded-case and low-voltage power circuit breakers in maintenance testing.
equip.low-voltage-circuit-breakers.mnt.secondary-injection	ANSI/NETA MTS-2023 calls for secondary injection tests of the trip unit on insulated-case, molded-case and low-voltage power circuit breakers in maintenance testing.
equip.low-voltage-circuit-breakers.mnt.visual-mechanical	ANSI/NETA MTS-2023 opens its sections on insulated-case and molded-case breakers and on low-voltage power circuit breakers with visual and mechanical inspection.
equip.low-voltage-circuit-breakers.mts-sections	ANSI/NETA MTS-2023 treats insulated-case and molded-case breakers together in section 7.6.1.1 and low-voltage power circuit breakers in section 7.6.1.2.
equip.low-voltage-circuit-breakers.mts-tables	The ANSI/NETA MTS-2023 sections on low-voltage circuit breakers refer to Table 100.1 for insulation resistance, and the insulated-case and molded-case section also refers to Table 100.7 for inverse-time trip testing and to Table 100.8 for instantaneous trip tolerances.
equip.low-voltage-circuit-breakers.osha-definition	29 CFR 1910.399 defines a circuit breaker as a device designed to open and close a circuit by nonautomatic means and to open the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating.