TAS Three Phase Current Transformer

Three cores in one moulded body that sits directly on top of the breaker. One part number instead of three, one mounting operation instead of three, and the panel gets its space back.

System voltage720 V, 50 to 60 Hz
Test voltage3 kV for 1 minute
Thermal short circuit current Ith60 × In
Dynamic short circuit current Idyn2.55 × Ith
HousingFlame retardant polycarbonate UL94 V-0
StandardsIEC/EN 60044-1
MountingDIN rail, busbar or base
Apertures15 × 25 mm, 21 × 25 mm, 31 × 31 mm

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Product Overview

The three in one current transformer is designed to be used at the top of the MCCB. The current transformer saves a lot of space and time.

The three phase (M3N1) current transformer is suitable for primary ratings from 100 A to 1200 A with 5 A secondary. It allows installation directly on top of moulded case circuit breakers for greater speed of installation and optimisation of space. Applicable MCCBs include the ABB Isomax series, Merlin Gerin NS series and Changshu CM1 series.

Application Scenarios

Moulded case circuit breaker metering
Three phase power and energy monitoring
Compact distribution boards
Retrofit metering on existing breakers

Technical Features

High quality triple current transformers in one body
Three sizes of aperture: 15 × 25 mm, 21 × 25 mm and 31 × 31 mm
Cable apertures from 15.5 mm to 31 mm
DIN rail, busbar or base mounting
Flame retardant polycarbonate UL94 V-0 housing

Specifications

Ratings by frame

Model	Ratio	Class	Burden
TASN-25-60/5	60/5 A	Class 1	1 VA
TASN-25-100/5	100/5 A	Class 1	1.5 VA
TASN-25-125/5	125/5 A	Class 1	1.5 VA
TASN-25-150/5	150/5 A	Class 1	1.5 VA
TASN-25-160/5	160/5 A	Class 1	1.5 VA
TASN-35-100/5	100/5 A	Class 1	1.5 VA
TASN-35-125/5	125/5 A	Class 1	1.5 VA
TASN-35-150/5	150/5 A	Class 1	1.5 VA
TASN-35-160/5	160/5 A	Class 1	1.5 VA
TASN-35-200/5	200/5 A	Class 1	1.5 VA
TASN-35-250/5	250/5 A	Class 1	1.5 VA
TASN-45-250/5	250/5 A	Class 1	1.5 VA
TASN-45-300/5	300/5 A	Class 1	2.5 VA
TASN-45-400/5	400/5 A	Class 1	2.5 VA
TASN-45-500/5	500/5 A	Class 1	2.5 VA
TASN-45-600/5	600/5 A	Class 1	2.5 VA
TASN-45-630/5	630/5 A	Class 1	2.5 VA

General specification

Parameter	Value
System voltage	720 V, 50-60 Hz
Test voltage	3 kV for 1 minute
Thermal short circuit current (Ith)	60 × In
Dynamic short circuit current (Idyn)	2.55 × Ith
Housing	Flame retardant polycarbonate UL94 V-0
International standards	IEC/EN 60044-1
Mounting	DIN rail, busbar or base
Apertures	15 × 25 mm, 21 × 25 mm, 31 × 31 mm

Real Product Photography

TAS Three Phase Current Transformer Gallery

TASN three phase current transformer, three in one body

TASN three phase current transformer mounted on a moulded case circuit breaker

TASN three phase current transformer, terminal layout

TASN three phase current transformer, installed view

TASN three phase current transformer specification strip

FAQ

Questions Buyers Ask

Which breakers does the TASN fit?

The published applicable list is the ABB Isomax series, the Merlin Gerin NS series and the Changshu CM1 series. Send the breaker model and frame size and an engineer will confirm the aperture and centres.

What is the difference between TASN-25, TASN-35 and TASN-45?

The aperture and hole centres, and therefore the current range: 25 covers 60 A to 160 A, 35 covers 100 A to 250 A and 45 covers 250 A to 630 A.

Can it be DIN rail mounted instead?

Yes, DIN rail, busbar and base mounting are all supported.

Is there a lower cost three phase option?

The D364 three phase current transformer is the low cost three phase body in the range.