Phoenix Contact TCP 0,25A Thermal Device Circuit Breaker

USD 29.10

Single-pole thermal device circuit breaker protecting 0.25A loads up to 250VAC/72VDC. Plugs into ISO 8820-3 fuse terminal blocks.

SKU Phoenix-0712123 Category
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Phoenix Contact TCP 0,25A Thermal Device Circuit Breaker

Model Identifier TCP 0,25A
Official Part Number 0712123
GTIN Standard 4017918848422

Technical Overview

Single-pole thermal device circuit breaker protecting 0.25A loads up to 250VAC/72VDC. Plugs into ISO 8820-3 fuse terminal blocks.

Key Features

  • Single-pole thermal device circuit breaker.
  • Fixed nominal current of 0.25 A.
  • Designed for installation on fuse terminal blocks and interfaces for flat plug-in fuses of type C (ISO 8820-3).
  • System disconnection for maintenance actions via the integrated device switch.
  • Easy to retrofit in existing systems with vehicle flat-type fuses with identical pin connector pattern.
  • Compact design.

Fast, replacement part-free recommissioning after an event with the reconnection options.

Technical Specification Matrix

ParameterValue
Product TypeThermal Device Circuit Breaker
Current Rating0.25 A (250 mA)
Voltage Rating AC250 V AC
Voltage Rating DC72 V DC
Number of Poles1 Pole
Mounting TypePlug-in (for fuse terminal blocks)
Minimum Operating Temperature-20 °C
Maximum Operating Temperature+60 °C
Physical Weight (kg)0.01
Dimensions L x W x H (cm)2.45 x 0.82 x 5.5

Industrial Applications

1. Low-Voltage DC Control Circuits in Automotive/Industrial Machinery

Provides overcurrent protection for sensitive electronic components such as small solenoids, indicator lights, or low-power sensors within 24V or 48V DC control panels of industrial machinery or automotive systems.

Problem Solved

Traditional fuses require manual replacement after an overload, leading to downtime and increased maintenance. This resettable thermal circuit breaker allows for quick recommissioning without replacing parts, improving system availability.

Automotive electronics protectionDC control circuitResettable fuseOvercurrent protectionIndustrial machinery

2. Protection of Individual Sensors/Actuators in Distributed I/O Systems

Safeguards individual low-power field devices, like sensors or small actuators, in complex industrial automation systems against overcurrent faults.

Problem Solved

Prevents a fault in a single device from affecting an entire I/O module or larger circuit. The resettable feature enables rapid troubleshooting and system restoration without the need for spare fuses, crucial for distributed I/O.

Distributed I/OSensor protectionActuator protectionIndustrial automationSelective coordinationResettable circuit protection

3. Auxiliary Circuits in Power Distribution Units (PDUs) or Control Cabinets

Ideal for protecting auxiliary circuits within larger power distribution units or control cabinets, such as those powering small cooling fans, panel lighting, or diagnostic ports.

Problem Solved

Offers low current protection for critical auxiliary functions. The ability to easily reset after a temporary fault reduces maintenance effort and ensures continuous operation of essential support systems within industrial enclosures.

Auxiliary powerControl cabinetPDUPanel lightingFan protectionOvercurrent safeguard
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