Aci A/SCS2-L Fixed Current Switch Din Rail Split Core

Product Description

The ACI A/SCS2-L is a fixed current switch designed for DIN rail mounting with a split-core configuration and a normally open (NO) output contact. It is used to detect the presence or absence of current flow in a circuit and signals building automation or HVAC control systems when current drops below or exceeds a set threshold. The low-trip designation indicates this unit is calibrated for lower current detection levels, making it well suited for monitoring smaller loads such as fan motors, pumps, or auxiliary equipment. Installation is typically handled by licensed electricians or controls technicians.

The A/SCS2-L fits into commercial and light-commercial building automation applications where current status monitoring is required without interrupting the monitored conductor. The split-core design allows the sensor to clamp around an existing wire without disconnecting it, which simplifies retrofit installations. It mounts directly to standard DIN rail, keeping panel layouts clean and organized. Typical applications include proving fan operation, verifying pump run status, and confirming load presence in HVAC and BAS control panels.

Key Features

• Split-core design allows installation on existing conductors without disconnecting wiring
• DIN rail mount for clean, organized control panel integration
• Normally open (NO) output contact signals current presence to the control system
• Low-trip calibration suited for detecting smaller motor and load currents
• Fixed trip point eliminates the need for field adjustment

Compatibility

Designed as an OEM-style replacement or new-installation current switch for DIN rail-mounted building automation and HVAC control panels requiring split-core, normally open current sensing.

Installation Notes

Installation should be performed by a licensed electrician or qualified controls technician in accordance with NEC requirements. Power down the control panel before mounting the device to the DIN rail and making output wiring connections. The split-core sensor clamps around the monitored conductor — do not install around bundled or shielded multi-conductor cable, as this will affect accuracy. Verify the monitored load current falls within the rated detection range of the switch before commissioning.

Technical Specifications

• Mounting Type: DIN Rail
• Core Type: Split Core
• Output Contact: Normally Open (NO)
• Trip Level: Low Trip (fixed)

Standard Information

• Brand: ACI
• Manufacturer Part Number: A/SCS2-L