nVent HOFFMAN CTMB8001 Metering Current Transformer Bas

Product Information

• Product Name: CTMB8003 Enclosure
• Model Number: CTMB8003
• Part Number: 87784866, 87786229
• Ampacity: 800 (400 for Service Type 3 4W)
• Maximum Voltage: 600
• Number of CT Provisions: 3
• Conductor Connection: 0.5 Studs on 1.75 centers
• Dimensions (A x B x C):
  • 48 x 30 x 11
  • 48 x 36 x 11
  • 36 x 30 x 11
  • 48 x 24 x 11
  • 36 x 36 x 11

Wire Bend Space (excluding wire terminal):

• 15.75 for dimensions: 48 x 30 x 11, 48 x 36 x 11, 48 x 24 x 11, and 36 x 36 x 11
• 9.75 for dimensions: 36 x 30 x 11

Product Usage Instructions

1. Ensure that the enclosure is included with the package.
2. Check that the product includes the required components.
3. Determine the ampacity and service type based on your specific requirements.
4. Identify the maximum voltage the enclosure can handle.
5. Count the number of CT provisions required for your application.
6. Connect conductors using the provided 0.5 studs on 1.75 centers.
7. Choose the appropriate enclosure size based on the dimensions provided.
8. Take into consideration the wire bend space listed (excluding the wire terminal) when routing wires within the enclosure. Consult UL 414, table 10.1 for minimum allowable space requirements based on the wire size and the number of wires per terminal.

Overview

Specification

Size and Spacing Table − Current Transformer Interiors and Enclosures

Ampacity	Maximum voltage	Service Type	Number of CT Provisions	CT Base Catalog Number	Conductor Connection	Hoffman UL 50 Enclosure A x B x C	Wire Bend Space**
800	600	3Æ 4W	3	CTMB8003	0.5 Studs on 1.75 centers	48 x 30 x 11	15.75
						48 x 36 x 11	15.75
400	600	3Æ 4W	3	CTMB8003	0.5 Studs on 1.75 centers	36 x 30 x 11	9.75
						48 x 30 x 11	15.75
						36 x 36 x 11	9.75
						48 x 36 x 11	15.75
800	600	1Æ 3W	2	CTMB8001	0.5 Studs on 1.75 centers	48 x 24 x 11	15.75
						48 x 30 x 11	15.75
						48 x 36 x 11	15.75
400	600	1Æ 3W	2	CTMB8001	0.5 Studs on 1.75 centers	48 x 24 x 11	15.75
						36 x 30 x 11	9.75
						48 x 30 x 11	15.75
						36 x 36 x 11	9.75
						48 x 36 x 11	15.75

Wire bend space listed does not take the wire terminal into consideration. Consult UL 414, table 10.1 for minimum allowable space requirements based on the wire size and the number of wires per terminal.

© 2018 Hoffman Enclosures Inc. PH 763 422 2211 • nVent.com/HOFFMAN.

Documents / Resources

nVent HOFFMAN CTMB8001 Metering Current Transformer Base [pdf] Instruction Manual CTMB8001 Metering Current Transformer Base, CTMB8001, Metering Current Transformer Base, Current Transformer Base, Transformer Base

References

• User Manual