Customer Interface Relay

CIR-2PS+

The SSI CIR-2PS+ Customer Interface Relay delivers two isolated solid-state dry contacts from a single Form A or C input. The first output is field-selectable as either Form A (KY) or Form C (KYZ) for the customer’s energy control system. The second output is a fixed 3-wire Form C contact located in the utility compartment, typically used for a pulse recorder or other utility instrumentation. All of this is packaged in a single compact, ready-to-use NEMA 4X weather-resistant enclosure.

Like all CIR-series relays, the CIR-2PS+ is internally divided into two compartments — a locked utility compartment and a customer compartment with terminal strip, fusing, LED status indicators, and an output mode switch. Coordinated fusing across both compartments supports fast fault isolation, and the dual-compartment design maintains a clear boundary between utility and customer-side equipment.

The CIR-2PS+ Customer Interface Relay on a white background.

Product Highlights

The addition of a second fixed Form C output in the utility compartment makes the CIR-2PS+ a practical solution for installations where both a customer energy management system and a utility pulse recorder must be served simultaneously from a single meter connection. Both outputs share the same solid-state switching devices, rated at 800V and 750mA for robust protection against transient voltage events.

The customer-accessible output mode switch allows the customer-side output to be changed between 2-wire and 3-wire without utility access. In 2-wire mode, each contact closure is approximately 100mS, occurring on every state change of the 3-wire input. Red and green LEDs in the customer compartment provide immediate visual status indication.

Features

The SSI CIR-2PS+ provides two isolated KYZ outputs from a single meter input — one field-selectable, one fixed utility output — in a compact NEMA 4X enclosure.
  • Two isolated KYZ outputs — one field-selectable Form A or Form C customer output; one fixed Form C utility output.
  • Dual-compartment NEMA 4X enclosure — locked utility section and accessible customer section in a single weatherproof package.
  • Field-selectable customer output — customer compartment switch selects 2-wire or 3-wire output mode without utility access.
  • Coordinated dual-compartment fusing — double "K" lead fusing across both compartments simplifies fault localization.
  • 800V/750mA solid-state switching — provides maximum protection from lightning and transient voltage events.
  • LED status indicators — red and green LEDs in the customer compartment allow rapid visual system verification.
The CIR-2PS+ Customer Interface Relay

Dual-output meter interface relay

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