Name: Siemens SENTRON Series Current Transformer 150 A 150:5 2.5 VA
Brand: Siemens
SKU: 175-6142
Price: 413.84 MYR
Availability: InStock

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Product Type	Current Transformer
	Series	SENTRON
	Power Rating	2.5VA
	Secondary Current	5A
	Terminal Type	Screw
	Minimum Operating Temperature	-30°C
	Primary Current	150A
	Maximum Operating Temperature	55°C
	Width	6mm
	Standards/Approvals	DIN EN 61346-2
	Weight	304g
	Depth	55mm
	Turns Ratio	150:5

	Select all
	Brand Siemens
	Product Type Current Transformer
	Series SENTRON
	Power Rating 2.5VA
	Secondary Current 5A
	Terminal Type Screw
	Minimum Operating Temperature -30°C
	Primary Current 150A
	Maximum Operating Temperature 55°C
	Width 6mm
	Standards/Approvals DIN EN 61346-2
	Weight 304g
	Depth 55mm
	Turns Ratio 150:5

Datasheet

COO (Country of Origin):: IN

Siemens SENTRON Series Current Transformer, 150A primary current, 5A secondary Current - 4NC5121-2CC21

This current transformer converts high primary currents to a standard secondary for measurement and protection tasks in low-voltage networks. It is designed for indoor electrical installations, with an insulation rating suitable for systems up to 0.72 kV and operation across standard power frequencies. The device incorporates a bushing-style through-conductor arrangement and provides touch-protected connections for safe integration with existing switchgear and metering equipment.

Features and Benefits:

• 150:5 turns ratio delivers predictable scaling for instruments
• 2.5 VA power rating CT limits burden on measurement circuits
• Class 1 accuracy ensures measured values meet metering tolerances
• Screw-terminal current transformer enables secure conductor termination
• Rated for -30 to 55°C operation for varied plant environments

Applications

• Suitable for panel-mounted energy monitoring installations
• Used with metering relays for overcurrent detection tasks
• Ideal for integration into distribution switchboards
• Can be used for industrial load current measurement points
• Used for protection coordination studies in substations

What short-time thermal capability does it use?

The rated short-time thermal current is specified as a multiple of the primary rated current using the formula Ith = x·Ipr per IEC 61869-2.

How is dynamic withstand defined for fault conditions?

Dynamic current is given as Idyn = 2.5·Ith or 150·Ipr according to IEC 61869 for the design.

What mechanical fixing and conductor sizes are supported?

It fastens by screw fixing and accepts a push-through conductor or busbar with up to 19 mm outer diameter.

What protection and indoor suitability does it provide?

It has IP20 ingress protection, touch-protection features, and is intended for interior use only.

Siemens SENTRON Series Current Transformer 150 A 150:5 2.5 VA

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