Double Row Terminal Blocks

General Information

Double Row Terminal Blocks are available in many line-to-line spacings. Open and closed back designs are available as shown in the table below. Insulator bases are available in both phenolic and thermoplastic material. Each series has many hardware and marking options available.

"Open back terminal blocks require an insulator strip to achieve voltage rating."

1506 STD

1506 STD

621RZ03

621 RZ 03

600GP07

600 GP 07 PSB

Double Row Terminal Blocks - Reference Chart
Amps Voltage Rating* Series (click links below for catalog #s & hardware) Base Material Bare-Wire Range** Screw Size Inches L to L # of Lines Closed / Open Back Click link to view Datasheet
Class B Class C
30 600 600 621 RZ Plastic #12 - #22 6-32 .437 1-30 Closed Back Datasheet
20 300 150 670A RZ Plastic #12 - #22 6-32 .375 1-30 Closed Back Datasheet
30 300 150 671 RZ Plastic #14 - #22 6-32 .437 1-30 Closed Back Datasheet
30 600 600 672 RZ Plastic #12 - #14 8-32 .562 1-24 Closed Back Datasheet
70 600 600 604 GP Phenolic #10 - #14 12-32 .875 1-8 Open Back* Datasheet
90 600 600 605 GP Phenolic #10 - #14 1/4-28 1.125 1-6 Open Back* Datasheet
30 n/a 600 400 Phenolic #10 - #22 10-32 .687 1-12 Closed Back Datasheet
5 300 n/a 410 GP Phenolic #18 - #20 2-56 .250 1-23 Open Back* Datasheet
15 300 300 600A GP Phenolic #12 - #22 6-32 .375 1-22 Open Back* Datasheet
20 300 300 601 / 801 GP Phenolic #12 - #22 6-32 .437 1-23 Open Back* Datasheet
30 300 300 602 / 802 GP Phenolic #10 - #18 8-32 .562 1-26 Open Back* Datasheet
50 600 600 603 GP Phenolic #10 - #16 10-32 .687 1-12 Open Back* Datasheet
30-75 600 600 1500 SERIES Phenolic #10 - #22 10-32 .562 2-12 Closed Back Datasheet

 

LEGACY PARTS NOT SHOWN IN THE TABLE ABOVE CAN STILL BE FOUND USING "SEARCH BY CATALOG #" FEATURE IN HEADER (EXAMPLE: 670A GP(100 SERIES), 671 GP (200 SERIES), 672 GP (300 SERIES), 600 GP, 1600 SERIES AND 1700 SERIES.

 

*Open back terminal blocks require an insulator strip to achieve voltage rating.

**Wire Range for Bare (unprepared) only. Prepared wire range (used with crimp type ring, fork or spade terminals) is dependent on the size of the crimp terminal applied and must not exceed the Amp rating specified.

Single Row Terminal Blocks

General Information

Single Row Terminal Blocks are available in four basic line to line molding sizes. Some are available in either open or feed thru/printed circuit designs. The basic material is phenolic. Modifications are also available on most terminal blocks, including marking strips.

411 GP 06 PSB / 411 GP 06 PSB KT11 KT12

411 GP 06 PSB / 411 GP 06 PSB KT11 KT12

812 GP 03 KT75

812 GP 03 KT75

Single Row Terminal Blocks - Reference Chart
Amps Voltage Rating Series (click links below for catalog #s & hardware) Base Material Bare-Wire Range Screw Size Inches L to L # of Lines Features Click link to view Datasheet
Class B Class C
5 300 n/a 411 Phenolic #18 - 20 3-56 .250 1-23 Open Back Datasheet
15 300 150 599 / 799 Phenolic #16-22 5-40 .375 1-30 Open Back Datasheet
20 300 150 699 / 899 Phenolic #14-20 6-32 .437 1-23 Open Back Datasheet
30 600 600 812 / 912 Phenolic #10-14 8-32 .562 1-18 Open Back Datasheet
 
 
Ratings and Standards

The voltage ratings of terminal blocks are based upon the minimum spacing between electrically conductive parts line-to-line through air and over surface and line-to-ground through air and over surface.

Class A - Service, including deadfront switchboards, panel boards and service entrance devices.

Class B - Commercial appliances including business equipment and electronic data processing equipment.

Class C - Industrial, general

 

 

Spacing Requirements (in inches)
  Voltage Through Air Over Surface
Class A 51-150 0.500 0.750
151-300 0.750 1.250
301-600 1.000 2.000
Class B 51-150 0.063 0.063
151-300 0.094 0.094
301-600 0.375 0.500
Class C 51-150 0.125 0.250
151-300 0.250 0.375
301-600 0.375 0.500