24T12

Reverse-action vacuum thermal-delay switch. Heater warm-up mechanically changes the contact state after a time delay, providing sequencing and protection in electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 500 mA

Description

Reverse-action vacuum thermal delay switch.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 500 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

ThermalDelaySwitch

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1961 Associated Electrical Industries

Published operating points and test conditions from this source.

SECTION 1

ThermalDelaySwitch

Characteristics

Maximum switch current
1 A
Maximum switch voltage
500 V
Minimum switch closing time
15 s
Maximum switch closing time
45 s