High Current H /BT series terminal blocks | Leading source of dependable electrical components | Curtis Industries Electrical Components for Industry

Types H and BT

Features

Sectional High and Medium Power Terminal Blocks - Designed for high power applications and control/power circuits respectively. Units approach power ratings of larger terminal blocks while retaining increased circuit density of low power designs.

Broad Terminal Choice One thru 30 terminals on .652" center-to-center spacing with white fiber circuit marking strips.

Thru-Bolt Barrier-Type Construction - Rated at 75 amps/600 volts for Type H; 30 amps/600 volts for Type BT.

Unique Bar and Traveling Collar Design - Eliminates lugging of wire on Type H. UL recognized for No. 16AWG to No. 4AWG. Type BT uses two No. 10-32 terminal screws. UL recognized for No.22AWG to No.10AWG.

Combined Style Flexibility - Types can be used in combination as well as be combined with types L, O, S, T & U for greater application flexibilty.

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
H High-pressure solderless connector	BT Terminal bar with two No. 10-32 screws

Terminal Designations

H	Brass bar with high-pressure solderless connectors accepting wire form No. 16AWG to No. 4AWG.

BT	Brass terminal bar with two No.10-32 plated steel terminal screws accepting wire up to No. 10AWG.

Engineering Specifications

Center-to-Center Spacing:
.652" (16.56mm)

Wire Range:

Type H
UL Recognized for
No.16AWG to No.4AWG.

Type BT
UL Recognized for
22AWG to No.10AWG.

Number of Terminals: 1 thru 30

Voltage Rating:
CSA - 600 volts.
UL - 600 volts General Industrial

Tightening Torque:	Type H -	45in.-lbs ( 4- 6AWG) 40in.-lbs ( 8AWG) 35in.-lbs (10-16AWG)
	Type BT -	20in.-lbs

Current Rating:
75 amps (Type H); 30 amps BT. UL and CSA.

NOTE: Specifications contained herein are subject to change without notice.

Housing:

Material	Thermoplastic-polyester

Continuous Use Temp. (UL Index)	130°C (266°F)

Flammability Rating	94V-0

Water Absorption (24hrs. % wt. gain)	.07%

Chemical Resistance	Excellent in most environments

Breakdown Voltage

Terminal - Terminal
Terminal - Ground

10,400V Typ.
8,400V Typ.

8,100V Typ.
7,600V Typ.

Dimensions

NOTE: mm dim. are shown in parentheses.

No. of Terminals	Mounting Dimensions		Overall Dimensions
No. of Terminals	Inches	Metric (mm)	inches	Metric (mm)
1	1.66	42.1	2.36	59.8
2	2.31	58.6	3.01	76.4
3	2.96	75.1	3.66	92.9
4	3.61	91.6	4.31	109.4
5	4.26	108.1	4.96	126.0
6	4.91	124.6	5.61	142.5
7	5.56	141.1	6.26	159.1
8	6.21	157.6	6.92	175.6
9	6.86	174.1	7.57	192.2
10	7.51	190.6	8.22	208.7
11	8.16	207.1	8.87	225.3
12	8.81	223.6	9.52	241.8
13	9.46	240.2	10.17	258.4
14	10.10	256.6	10.82	274.9
15	10.75	273.2	11.48	291.5
16	11.40	289.7	12.13	308.0
17	12.05	306.2	12.78	324.6
18	12.70	322.7	13.43	341.1
19	13.35	339.2	14.08	357.7
20	14.00	355.7	14.73	374.2
21	14.65	372.2	15.39	390.8
22	15.30	388.7	16.04	407.3
23	15.95	405.2	16.69	423.9
24	16.60	421.7	17.34	440.4
25	17.25	438.2	17.99	457.0
26	17.40	454.7	18.64	473.5
27	18.55	471.2	19.29	490.1
28	19.20	487.7	19.95	506.6
29	19.85	504.2	20.60	523.2
30	20.50	520.7	21.25	539.7
Dimensions shown are +/-.030"

How to Order

Types H and BT terminal blocks are ordered by listing a composite number made up of the model designation followed by the number of terminals required for the application. Example: 10-pole terminal block becomes H-10 or BT-10.

When ordering combinations of both types, the composite number is made up of both model designations followed by total number of poles and number of each type. A composite of three H terminals followed by two BT terminals thus is converted to stock number HBT-5(3H,2BT).

Combining these types with Types L, O, S, T and U would follow the same ordering format. (Note - when combined with types L, O, S, T and U a special adapter is required).


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