Part # Search

About Curtis

Distributors

Reps

Competitor Cross-Reference

Catalog PDF's

Contact Us

Sample Request

What's New

Shipment Track

FAQ's

Glossary

Check Stock

Terms and Conditions

Series M

Features Compact Modular Design for Low Power Circuits - Suitable for surface connection applications using channel assembled modular construction. All-Surface Mountability - Requires no additional insulation. Electro tin-coated steel mounting channel has two .196" diameter mounting holes. Thermo-Set Phenolic Barrier-Type Terminal Blocks - One thru 24 terminals are on 1/2" center-to-center spacing. Broad Choice of Terminal Connections - Available in three screw designs and two .250" wide quick-connect variations offering up to four connections per terminal. Wire Sizes - Series M (No. 6-32 screw) is UL recognized for No. 22AWG to No. 14 AWG. MA Series (No. 8-32 screw) is UL recognized for No. 22AWG to No. 12AWG. CSA requires lugs on wire larger than No. 14AWG for series MA, and CSA requires lugs on No. 16AWG for Series M. Marking tabs are available for circuit identification. Current/Voltage Rating - MA Series 25 amps/300 volts, M Series 15 amps/300 volts.

Recognized under the Components Program of Underwriters Laboratories, Inc. Standard 1059, Guide No.XCFR2, File No.E62557. Guide No.184-N-90, Report No.LR39186-1.

Variations
MA Terminal bar with two No. 8-32 screws	MAQ Four .250" wide quick-connects	MALQ Two .250" wide quick-connects and one No. 8-32 screw
M Terminal bar with two No. 6-32 screws	MC Terminal bar with two captivated clamp assemblies	M-type With marking strip attached (see below*)

Terminal Designations *MA 16-gauge (.051") brass terminal bar with two No. 8-32 plated steel screws per terminal accepting wire up to No. 12AWG. *MAQ Four .250" x .032" brass quick-connect tabs per terminal accepting wire up to No. 12AWG. *MALQ Two .250" x .032" brass quick-connect tabs and one No. 8-32 plated steel screw per terminal accepting wire up to No. 12AWG. Rated 25amps/300 volts. *M Brass terminal bar with two No. 6-32 plated steel screws per terminal accepting wire up to No. 14AWG. *MC Brass terminal bar with two-piece No. 6-32 plated steel, captivated clamp assemblies per terminal accepting wire up to No. 14AWG. *All models available with marking tabs. To specify, add the suffix "T". (See "How To Order").

Engineering Specifications Center-to-Center Spacing:     1/2" (12.7mm) Wire Range: UL recognized for No.22AWG to No.12AWG.(MA), No.22AWG to No.14AWG(M).(CSA requires use of lugs on wire larger than No. 14AWG (MA), No.16AWG(M).) Number of Terminals: 1 thru 24 Voltage Rating: CSA -  300 volts UL -     150 volts - General Industrial            250 volts - Commercial Appliance Tightening Torque: 12 in.-lb Current Rating: 15 amps. (M); 25 amps (MA). UL and CSA. NOTE: Specifications contained herein are subject to change without notice.

Housing: Material Phenolic Continuous Use Temp. (UL Index) 150°C (302°F) Flammability Rating 94V-1 Water Absorption (24hrs. % wt. gain) .05% Chemical Resistance Resistant to most organic solvents. Breakdown Voltage Terminal - Terminal Terminal - Ground 7,400V Typ. 7,800V Typ.

Dimensions NOTE: mm dim. are shown in parentheses.

No. of Terminals Mounting Dimensions Overall Dimensions Inches Metric (mm) inches Metric (mm) 1 1.000 25.40 1.375 34.92 2 1.500 38.10 1.875 47.62 3 2.00 50.80 2.375 60.32 4 2.500 63.50 2.875 73.02 5 3.000 76.20 3.375 85.72 6 3.500 88.90 3.875 98.42 7 4.000 101.60 4.375 111.12 8 4.500 114.30 4.875 123.82 9 5.000 127.00 5.387 136.52 10 5.500 139.70 5.875 149.22 11 6.000 152.40 6.375 161.92 12 6.500 165.10 6.875 174.62 13 7.000 177.80 7.375 187.32 14 7.500 190.50 7.875 200.02 15 8.000 203.20 8.375 212.72 16 8.500 215.90 8.875 225.42 17 9.000 228.60 9.375 238.12 18 9.500 241.30 9.875 250.82 19 10.000 254.00 10.375 263.52 20 10.500 266.70 10.875 276.22 21 11.000 279.40 11.375 288.92 22 11.500 292.10 11.875 301.62 23 12.000 304.80 12.375 314.32 24 12.500 317.50 12.875 327.02

How to Order

M Series terminal blocks are ordered by listing a composite number made up of the model designation followed by the number of poles required for the application. Example: Type M 10-pole block becomes stock number M-10.

Suffixes are used as follows:
T	Denoted model where marking tabs are required

The M-10 described above with marking tabs thus converts to stock number MT-10.

Click here for accessories