Customer Interface Relay

CIR-22PS

The SSI CIR-22PS Customer Interface Relay provides two isolated solid-state dry Form C contacts from two independent Form A or C inputs. Each output channel is individually configurable as either a Form A (KY) or Form C (KYZ) contact. The typical application is the utility’s interface between a kWh meter and a customer-owned energy control system where two distinct pulse types are needed — for example, one channel for watt-hour pulses and a second for var-hour pulses.

The CIR-22PS is divided into two internal compartments: a locked utility compartment housing all electronics and coordinated fusing, and a customer compartment containing a terminal strip, fusing, and LED status indicators. Input configuration (2-wire or 3-wire) and output pulse mode (Long or Short) are independently set per channel using jumper selectors in the customer compartment.

The CIR-22PS Customer Interface Relay on a white background.

Product Highlights

The dual-input design makes the CIR-22PS ideal for metering setups where two separate meter outputs must be isolated and delivered to customer equipment simultaneously. Each channel operates independently, with its own input configuration jumper and output pulse mode selector — providing maximum flexibility without requiring utility access for field adjustments.

Coordinated fusing in both compartments supports rapid fault isolation by channel, and the 800V/750mA solid-state switching devices provide robust protection against transient voltage events. Per-channel red and green LEDs in the customer compartment give technicians an immediate visual status check for each input independently.

Features

The SSI CIR-22PS provides two independent isolated KYZ outputs from two separate meter inputs, supporting watt-hour and var-hour pulse channels in one NEMA 4X enclosure.
  • Two independent input channels — accepts two separate Form A (2-wire) or Form C (3-wire) inputs, each with +13VDC wetting voltage.
  • Two isolated Form C outputs — dual solid-state dry KYZ contacts in the customer compartment, each usable as Form A or Form C.
  • Per-channel jumper configuration — input type (2-wire/3-wire) and output mode (Long/Short) set independently per channel.
  • Dual-compartment NEMA 4X enclosure — locked utility compartment and accessible customer compartment in one weatherproof package.
  • Coordinated dual-compartment fusing — per-channel double "K" lead fusing enables fast utility vs. customer fault identification.
  • 800V/750mA solid-state switching — provides maximum protection from lightning and transient voltage damage.
  • Per-channel LED indicators — individual red and green LEDs for each channel allow rapid independent visual status checks.
The CIR-22PS Customer Interface Relay

Dual-channel independent input interface

world leader

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