Effective December 2016 Technical Data 2070 Supersedes December 1998 Feed-through and standalone stud type junction blocks Studs Non-feed-through junction blocks are plated steel Feed-through junction blocks are copper alloy Note: Voltage rating dependent upon installation Suggested maximum termination ratings Stud size/thread/ Amps 10-32 50 1/4-20 100 5/16-18 200 3/8-16 250 1/2-20 400 Catalog symbols: C19 C27 C29 C40 C58 C63 JB38 Description: Bussmann series feed-through and standalone stud type junction blocks for heavy-duty ground or power connection points in AC or DC circuits. Modular construction offers design and manufacturing flexibility with mounting options well suited for transformers, communication and computer power sections along with various vehicle electrical systems.Technical Data 2070 Feed-through and standalone stud type junction blocks Effective December 2016 1.87 0.75 F (47.6) (19.1) 1.12 H J (28.6) M (thread size) A A CB K K G E D L (4 mtg. holes) L (2 mtg. holes) Fig. 1 Fig. 2 (All other catalog numbers) (Catalog numbers C1925, C1933, C1933-1) Catalog numbers and dimensions in (mm) Catalog no. Fig. A B C D E F G H J K L M Material Color 0.22 dia. w/.41 C2791* 2 2.06 (52.4) 0.69 (17.5) 0.44 (11.2) 0.62 (15.9) 0.69 (17.5) 0.31 (7.9) 0.69 (17.5) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3) dia. Cbore x .14 1/4-20 Thermoset Black deep 0.22 dia. w/.41 C2909* 2 2.06 (52.4) 0.69 (17.5) 0.44 (11.2) 0.62 (15.9) 1.0 (25.4) 0.31 (7.9) 0.69 (17.5) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3) dia. Cbore x .14 10-32 Thermoset Black deep 0.22 dia. w/.41 C2909-1* 2 2.06 (52.4) 0.69 (17.5) 0.44 (11.2) 0.62 (15.9) 1.0 (25.4) 0.31 (7.9) 0.69 (17.5) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3) dia. Cbore x .14 1/4-20 Thermoset Black deep 0.22 dia. w/.41 C1938* 2 2.06 (52.4) 0.94 (23.8) 0.69 (17.5) 0.87 (22.2) 0.69 (17.5) 0.31 (7.9) 0.87 (22.2) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3) dia. Cbore x .14 3/8-16 Thermoplastic Black deep 0.22 dia. w/.44 C1925* 1 2.75 (69.8) 1.5 (38.1) 1.25 (31.7) 1.25 (31.7) 1.12 (28.6) 0.37 (9.5) 1.12 (28.6) 0.19 (4.8) 0.19 (4.8) 2.0 (50.8) dia. Cbore x .16 1/2-13 Thermoplastic Red deep 0.22 dia. w/.41 C4044* 2 2.06 (52.4) 0.87 (22.2) 0.62 (15.9) 0.62 (15.9) 1.12 (28.6) 0.31 (7.9) 0.87 (22.2) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3) dia. Cbore x .14 3/8-16 Thermoplastic Black deep 0.22 dia. w/.41 C5898* 2 2.06 (52.4) 0.94 (23.8) 0.69 (17.5) 0.87 (22.2) 0.69 (17.5) 0.31 (7.9) 0.87 (22.2) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3) dia. Cbore x .14 3/8-16 Thermoplastic Red deep 0.22 dia. w/.37 JB3816-2 2 2.12 (54.0) 1.0 (25.4) 0.62 (15.9) 0.94 (23.8) 0.69 (17.5) 0.31 (7.9) None 0.06 (1.6) None 1.37 (34.9) dia. Cbore x .14 3/8-16 Thermoplastic Black deep 0.22 dia. w/.37 JB3816-3 2 2.12 (54.0) 1.0 (25.4) 0.62 (15.9) 0.94 (23.8) 0.69 (17.5) 0.31 (7.9) None 0.06 (1.6) None 1.37 (34.9) dia. Cbore x .14 3/8-16 Thermoplastic Red deep C1933 1 2.75 (69.8) 1.44 (36.6) 1.25 (31.7) 1.5 (38.1) 1.12 (28.6) 0.37 (9.5) None 0.19 (4.8) None 2 (50.8) 0.22 dia. 1/2-13 Thermoplastic Black C1933-1 1 2.75 (69.8) 1.44 (36.3) 1.25 (31.7) 1.5 (38.1) 1.12 (28.6) 0.37 (9.5) None 0.19 (4.8) None 2 (50.8) 0.22 dia. 5/16-18 Thermoplastic Black 0.22 dia. w/.37 C6344-1 2 2.12 (54.0) 0.62 (15.9) 0.62 (15.9) 0.87 (22.2) 0.69 (17.5) 0.31 (7.9) None 0.06 (1.6) None 1.37 (34.9) dia. Cbore x .14 1/2-20 Thermoplastic Black deep * Feed-through options Nuts and washers consult factory. Not RoHS compliant. The only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. Eaton 1000 Eaton Boulevard Cleveland, OH 44122 Eaton.com Bussmann Division 114 Old State Road Ellisville, MO 63021 United States Eaton.com/bussmannseries Follow us on social media to get the 2016 Eaton Eaton and Bussmann are valuable trademarks latest product and support information. All Rights Reserved Printed in USA of Eaton in the U.S. and other countries. You Publication No. 2070 BU-SB98107 are not permitted to use the Eaton trademarks December 2016 without prior written consent of Eaton. Eaton.com/bussmannseries