Home / Product / 35mm Mount Hole Large Circuit Breaker / Single Phase 1F Circuit Breaker - Curved & Flat / 700 Single Phase 1F Circuit Breaker – Flat [35mm]

700 Single Phase 1F Circuit Breaker – Flat [35mm]

Model: T2P700T110: 110℃; 120℃; 130℃; Curved version available

35mm mounting hole low voltage CSP single phase circuit breakers, used for single phase 125KVA,150KVA,167KVA Pole and Pad Mounted high performance transformers. CSP oil immersed circuit breaker is installed on the secondary winding of the transformer,uses oil for insulation and arc extinction to protect electrical systems from faults.

Request Quote

Low loss, High interrupting capabllity

Resetting Mechanlsm&Emergency Control, Easy for Malntalnance

Complete Certification

Specifications

Model	T2P700T110
Rated Current	700A
For Transformer	167KVA
Rated Voltage	240V
Trip Temp.	110℃, 120℃, 130℃
Phase	1F
Mounting Hole Diameter	35mm
Mounting Surface	CURVED/FLAT

Standards Product Dimension Video & Photos FAQS

Standards

❖ Standards for Reference:

ANSI C 57.109-2018 (Revision of lEEE Std c57.109-1993) lEEE Guide for liquid-immersed Transformer through-Fault-Current Duration
lEEE Standard C37.91 -2008, lEEE Guide for Protecting Power Transformers.
IEEE Standard C57.91-2011/IEEE C57.12.00-2015 /IEEE C57.12.90-2015
IEEE C37.13-2015 /IEEE C37.50-2018
IEC60947-2:2016+AMD1:2019 Part 2: Circuit-breakers.
PLN D30.002-2008(Indonesia)Specification for CSP transformers

❶ Specification and Data Sheet

There are single phase circuit breakers, used for single phase transformers. Circuit breakerare installed on the secondary winding of the transformer, are used for over load protection andshort circuit protection.

Model	Current (A)	Rating (KVA)	Voltage (V)	Signal light	Emergency switch (overload)	Magnetic protection	Resistance (Ω) at 25°C 2 poles	Loss (W) at 85°C 2 poles
T2P520TXXX	520	125	240	Yes	Yes	Yes	190	63
T2P520TXXX	520	125	240	Yes	Yes	Yes	190	63
T2P625TXXX	625	150	240	Yes	Yes	Yes	190	90
T2P625TXXX	625	150	240	Yes	Yes	Yes	190	90
T2P700TXXX	700	167	240	Yes	Yes	Yes	190	114
T2P700TXXX	700	167	240	Yes	Yes	Yes	190	114

Note:

T2P520TXXX,T means USA style,2P means 2 Pole,"520" means current,"TXXX" means trip temperature, for example “T120"means the trip temperature is 120℃ . Temperature can be setted from 90 to 130 degree, with +/-10% tolerance.
And there are +10% tolerance for resistance and losses, emergency tolerance: +/-10%.

❷ Electrical specification for all CSP Oil Type Circuit Breaker

Max Voltage	Power Frequency Test (one minute) 50/60HZ	Lightening Impulse Test	Insulation Resistance (5000V)	Normal Interrupting Capacity
600V	≥10KV	30KV	≥5000MΩ	11KA~20KA

❸ Interrupting Capacity

Model	Current (A)	Interrupting Capacity(KA)
T2P520TXXX	520	20KA
T2P520TXXX	520	20KA
T2P625TXXX	625	20KA
T2P700TXXX	700	20KA

❹ Trip Temperature and Bi-metal Temperature Rise to Oil

(Trip temperature = Bi-metal trip temperature)

No.	Bimetal ID	Current (I: A)	Bi-metal Ampere Response Factor (J: °C/A²)	Bi-metal temperature rise to oil (ΔT: °C)	Oil temperature (To: °C)	Bi-metal temperature (T: °C)
01	520	520	0.0000185	5.0	To	5.0+To
02	625	625	0.0000128	5.0	To	5.0+To
03	700	700	0.0000122	6.0	To	6.0+To

T:Bi-metal temperature(℃ )
ΔT:Bi-metal temperature rise to oil(℃ )
To:oil temperature(℃)
I:Current flow through the Bi-metal trip in(A)
J:Bi-metal Ampere Response Factor in (J:℃ /A²)
ΔT=I²*J
T= ΔT+To
Note: When Bi-metal temperature reaches the trip temperature setting of the breaker,the breaker trip.

Product Dimension

Key Dimensions Overview

The following drawings show only partial product dimensions.
For the complete set of engineering drawings or full specifications, please contact us at [📪nancywang@ketranele.com].
Video & Photos

Installation Video

Application
FAQS

Q1:Do you have 35mm mounting hole single phase CSP circuit breaker for 167VA transformer?

A1:Yes, we are the source factory,specialized in producing CSP single phase pole-mounted and pad-mounted transformer circuit breaker, provide the protection device for large distribution transformer.

Q2:How does a CSP breaker protect the transformer?

A2:It disconnects the transformer from the circuit when overload or short-circuit occurs.

Q3:Can CSP breakers be customized for different transformer capacities?

A3:Yes, available in single-phase and three-phase models with different ratings.

Q4:What are the advantages of an oil-immersed breaker?

A4:It provides high reliability, stable insulation, and long service life.

Q5: What is the MOQ for the Low voltage CSP Large circuit breaker 167KVA/800A/120-240V?

A5: 1 units is acceptable.