Triple Pulse Isolation Relay

SPR-36

The SSSI SPR-36 Triple Pulse Isolation Relay provides six isolated dry-contact solid state Form C (K, Y & Z) outputs from three independent field-selectable Form A or C inputs. Designed for maximum flexibility, the SPR-36B can be configured as three independent 2-output repeating relays, two independent 3-output repeating relays, or a variety of paralleled input arrangements — all within a single ultra-compact enclosure.

Typical applications include interfaces between utility metering devices and customer-owned energy control systems, demand recorders, and SCADA system interfaces. The SPR-36 supports high-speed pulse rates up to 72,000 pulses per hour in 3-Wire mode and 36,000 pulses per hour in 2-Wire mode, with output pulse timing that exactly mirrors the input pulse width.

The SPR-36 Triple Pulse Isolation Relay on a white background.

Product Highlights

The SPR-36 includes individual red and green LED indicators on every input and output channel, providing at-a-glance status across all six outputs without additional test equipment. A built-in transformer-isolated +13 VDC sense voltage supply serves all three input channels, and the common “Kin” return terminal enables flexible multi-meter input wiring configurations.

Built-in MOV transient protection and individually fused “K” output leads on all six channels provide robust protection against wiring faults and transient events. The polycarbonate enclosure and mounting base plate ensure reliable electrical insulation between circuits and the mounting surface.

Features

The SPR-36 provides six flexible isolated pulse outputs across three independent input channels in one compact enclosure.
  • Six isolated solid state Form C (K, Y & Z) dry contact outputs from three field-selectable Form A or C inputs
  • Flexible input configurations — supports three 2-output or two 3-output independent relay arrangements
  • Inputs parallelable for a variety of multi-meter wiring configurations
  • Output pulse timing mirrors input pulse width exactly
  • High-speed operation up to 72,000 pulses/hour (3-Wire) or 36,000 pulses/hour (2-Wire)
  • Built-in transformer-isolated +13 VDC sense voltage for all three input channels
  • Solid state contacts rated at 125 VAC/VDC at 100 mA, 800 mW maximum
  • Built-in MOV transient protection on all relay contacts
  • Fused "K" output leads (1/10 amp, 3AG) on all six output channels
  • Individual red and green LED status indicators on every input and output channel
  • 2,500 Vrms input/output isolation voltage
SPR-36 Triple Pulse Isolation Relay

Six Outputs, Three Input Channels

world leader

Can't Find What You're Looking For?

Let our teams of qualified professionals help you make the right choice.
A team of meter technicians using the RW-30X in the field on a meter.
A close up of a hand using the WECO RW-31X NS.
A side by side of the WECO 9200 and the WECO 8030
The WECO 310 on a transparent background (feature).
A meter tech using the WECO 8030 in a shop.
WECO SMART AMI Meter Farms installed at a site.
SSI equipment over a blue green background.
The Radian Research RS-933 on a semi-transparent background.
The WECO 4150X with optics arm on a transparent background.