U.S. Army M40 Electrical Power Distribution Box 120/208V 3-Phase 40A/Phase, 12 Outputs, NSN 6150-01-208-9753

U.S. Army M40 electrical power distribution box, part of a military field distribution system: 120/208V three phase in at 40 amps per phase, feed-through output at the same rating, and twelve 20-amp single-phase branch outputs, several of them ground-fault protected. Nameplate part number 97403-13226E7049, NSN 6150-01-208-9753, technical manual TM 5-6150-226-13&P.

Boxes of this type distribute generator power across a field site: tents, shops, shelters, and equipment fed from one 3-phase source through breaker-protected branch circuits. Surplus units find second lives in mobile operations, event and film power distribution, remote job sites, disaster response, and shop power where a rugged, self-contained breaker panel with military connectors beats building one.

Olive-drab painted steel case with heavy paint chipping, scuffing, and surface rust on the hinges and latch hardware; well used but structurally intact. Reported to be working when removed from service, and carries a Tooele Army Depot warranty plate from its service life.

Sold as-is, surplus from King Surplus inventory in Del Rio, Texas. Same-day shipping on orders before 3:00 PM CT.

• Nameplate holder: U S ARMY. No commercial manufacturer is named anywhere on the nameplate.
• Model: M40
• Nomenclature: DISTRIBUTION SYSTEM ELECTRICAL
• Serial: TEAD 12 87 00315
• Part No: 97403-13226E7049
• NSN: 6150-01-208-9753
• Technical Manual: TM 5-6150-226-13&P
• Distribution centre reference: DISTR CTR 97403-13226E7028
• Contract number: the CONTR NO field on the nameplate is blank or illegible.
• Voltage: 120/208V
• Phase: THREE PHASE
• Input: 40 AMP/PH, 120 total
• Output: 40 AMP/PH feed through
• Branch outputs: TWELVE 20 AMP. The nameplate individually lists J2 output 40 A 3 phase, and J4, J6, J8, J10, J12 and J14 each 20 A 1 phase.
• Case: olive drab painted steel
• FLAG for review, manufacturer: this record's Manufacturer field (FID 56) reads "Lex Products". Nothing on the nameplate names Lex Products, and the 97403 prefix on the part number is a government drawing CAGE rather than a maker's mark, so it does not by itself establish who built the box. The Lex attribution is not restated here as a fact and needs a documented source before it is relied on.
• Ground-fault protection is not marked on the nameplate transcribed in this pass. The previous entry stated that several branch outputs are GF protected; that is not confirmed here and is not asserted.
• Factory overall dimensions and factory net weight are not published on the nameplate and are not stated here.

Spec Basis: Verified 2026-09-16 against this unit's own nameplate photographs (U S ARMY M40 data plate, KSC record 11763), cross-checked against Model (FID 57), Serial (FID 58), Voltage (FID 61), Phase (FID 63) and Amps (FID 66), all of which agree with the plate. The electrical ratings, part number, NSN, technical manual reference and connector schedule above are transcribed from that plate. Corrections made: the prior entry's "Input (J1)" and "Outputs (J3-J14)" connector labels do not match the plate, which names J2 and then the even-numbered connectors J4 through J14; the ground-fault claim is unconfirmed; and its "Dimensions: 19 x 22 x 17 in" and "Weight: 50 lb" were a copy of our own shipping measurements (FIDs 77, 78, 79, 80), not factory specifications.