Current transformer ZAMEL SPL10000030 100 A to 33.3 mA SC-16

ZAMEL SPL10000030 is a current transformer that converts a 100 A primary current into a 33.3 mA secondary signal. Housed in an SC-16 enclosure, the device provides galvanic isolation between the measured conductor and metering or protection equipment. It is intended for situations where a standardised low-level secondary current is needed for measurement, monitoring or control without direct electrical connection to the high-current circuit.

Advantages

The transformer offers reliable current conversion with a fixed 100 A to 33.3 mA ratio, compact form factor thanks to the SC-16 housing, and built-in galvanic isolation for enhanced safety. Its construction supports straightforward integration into electrical panels and energy metering systems, enabling accurate downstream measurement and compatibility with a wide range of meters and protection relays.

Suitable for

• Energy meters and submeters that require a standard secondary current input
• Protection circuits and relays for overcurrent monitoring
• Electrical panels and switchgear installations where isolation is needed
• Industrial and commercial installations for current monitoring and logging

Key specifications

• Primary current rating: 100 A
• Secondary current output: 33.3 mA
• Enclosure type: SC-16 form factor
• Function: galvanic isolation between primary conductor and secondary circuit
• Application: measurement, monitoring and protection integration

How to use

Install the current transformer so the primary conductor passes through the SC-16 aperture according to the electrical panel layout and local wiring regulations. Connect the secondary output to the compatible metering or protection device, ensuring correct polarity and secure terminations. Verify that the measuring instrument expects a 33.3 mA secondary signal and that the transformer's primary rating matches the circuit nominal current. Perform insulation and continuity checks before energising the circuit.

Usage recommendations

Use the transformer within its rated primary current and in environments that comply with the device's intended installation conditions. Maintain secure mechanical mounting in the panel and avoid exposing the device to excessive moisture, dust or corrosive atmospheres. When integrating with meters or relays, confirm input settings accept a 33.3 mA secondary and follow local electrical safety standards during installation and maintenance.