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HomeProductsConnectors, InterconnectsTerminal Blocks - Barrier BlocksT37058-15-0
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T37058-15-0 - Curtis Industries

Manufacturer Part Number
T37058-15-0
Manufacturer
Curtis Industries
Allelco Part Number
98D-T37058-15-0
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
46,279 pcs available, New & Original
Parts Description
CONN BARRIER STRP 15CIRC 0.375"
Package
Bulk
Data sheet
T37058-15-0.pdf

Environmental Information

Curtis Industries REACH.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 46279
  • Unit Price: $11.399
  • Subtotal: $0.00

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Specifications

T37058-15-0 Tech Specifications
Curtis Industries - T37058-15-0 technical specifications, attributes, parameters and parts with similar specifications to Curtis Industries - T37058-15-0

Product Attribute Attribute Value
Manufacturer Curtis Industries
Wire Gauge 12-22 AWG
Voltage Rating 300V
Top Termination Screws with Captive Plate
Terminal Screw Material -
Terminal Screw Finish -
Terminal Block Type Barrier Block
Series 37000
Pitch 0.375' (9.53mm)
Package Bulk
Operating Temperature 105°C
Number of Wire Entries 15
Product Attribute Attribute Value
Number of Rows 1
Number of Circuits 15
Mounting Type Chassis, Panel; Through Hole
Material Flammability Rating UL94 V-0
Material - Insulation Polypropylene (PP)
Features Flange
Current Rating (Amps) 20A
Color -
Bottom Termination Quick Connect (0.250')
Base Product Number T37058
Barrier Type 3 Wall (Tri)

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8536.90.4000

Frequently Asked Questions(FAQ)

What wire gauges can I safely terminate in the T37058-15-0 barrier block connector?
The T37058-15-0 accepts 12–22 AWG wire at all 15 circuits. The 20A current rating supports this gauge range without derating across the operating temperature to 105°C. For 20A circuits, 12 AWG copper wire is preferred to minimize voltage drop over typical interconnect runs; 14 AWG remains acceptable for the same current but introduces approximately 25% additional resistance per unit length. The captive plate design on the T37058-15-0 secures the wire and prevents partial withdrawal during thermal cycling, which is critical when operating near the 105°C upper limit. Always verify your wire insulation temperature rating meets or exceeds 105°C to ensure the termination remains reliable throughout the thermal envelope.
How does the 0.375" pitch on the T37058-15-0 affect PCB layout and panel space allocation?
The T37058-15-0 pitch of 0.375" (9.53mm) per circuit yields a total block footprint of approximately 5.625" across all 15 circuits in a single row. This spacing is typical for industrial control and power distribution panels where operator access and maintenance require clearance between adjacent connectors. The single-row configuration of the T37058-15-0 simplifies wiring diagrams and reduces cross-talk compared to multi-row alternatives; however, the 0.375" spacing may be tighter than legacy 0.500" systems, requiring verification of your panel cutout template and wire management routing. The flange-mounted design of the T37058-15-0 permits surface mounting on vertical panels without requiring additional brackets, reducing assembly labor.
Why is the 300V rating on the T37058-15-0 sufficient or insufficient for my three-phase industrial control application?
The T37058-15-0 300V rating is suitable for control circuits and single-phase loads up to ~240V RMS with adequate safety margin. For three-phase 480V systems, the T37058-15-0 is not rated for direct main-line termination and cannot be used as a primary distribution block. However, the T37058-15-0 remains applicable for low-voltage control signaling, auxiliary contacts, and sensor circuits derived from a 480V-to-24V transformer. Verify your application's actual line voltage and peak transient conditions; if your circuit includes inductive switching (contactor coils, relay solenoids), transient over-voltage can briefly exceed steady-state ratings, and the T37058-15-0 may require coordination with surge suppression or snubber networks to prevent arc-over across the 3-wall barrier structure.
What is the difference between the quick-connect bottom termination and the screw-terminal top on the T37058-15-0?
The T37058-15-0 features a dual-termination design: the top employs screws with a captive plate for field wiring termination, while the bottom uses quick-connect receptacles (0.250" tabs) for mating to external harnesses or backplane connectors. This asymmetry allows the T37058-15-0 to function as a transition block in modular systems: incoming field wires terminate topside via the captive screw mechanism, and outbound connections route through the quick-connect interface to reduce assembly time. The quick-connect design on the T37058-15-0 enables rapid block replacement without breaking field wiring, improving maintenance efficiency. Ensure your mating connectors are rated for the same 20A current and 300V environment; loose or corroded quick-connect contacts are a common failure mode and can introduce intermittent open circuits.
How does the tri-wall (3-wall) barrier structure on the T37058-15-0 protect against arc tracking and insulation degradation?
The T37058-15-0 incorporates a 3-wall barrier design that isolates each of the 15 circuits into individual compartments, physically separating conductors and reducing the path for arc propagation across adjacent circuits. The polypropylene (PP) insulation material combined with the UL94 V-0 flammability rating indicates the T37058-15-0 will self-extinguish and limit flame spread even under fault conditions. In humid or contaminated environments, the tri-wall structure of the T37058-15-0 increases creepage and clearance distances, reducing the risk of tracking—a progressive carbonization path that bridges insulation over time. The 3-wall barrier does not eliminate arc risk entirely; at 300V under high-current transients or inadequate wire crimping, arcing can still occur within a single circuit. The barrier's primary function in the T37058-15-0 is containment: preventing a fault in one circuit from cascading to neighbors, which is critical in safety-related control systems.
Is the T37058-15-0 suitable for outdoor or wet-environment installations without additional environmental protection?
The T37058-15-0 is not inherently sealed or potted and will not withstand prolonged direct moisture exposure without a secondary enclosure. The polypropylene (PP) housing of the T37058-15-0 is moisture-resistant but not waterproof; ingress of water or condensation into the quick-connect receptacles can lead to corrosion and intermittent contact resistance. For outdoor or high-humidity industrial settings, the T37058-15-0 must be mounted within a NEMA 4X (stainless steel) or equivalent rated enclosure. The captive-plate screw terminals on the T37058-15-0 provide some protection against accidental contact once tightened, but the open top design leaves the connection points accessible to dust and moisture. RoHS3 compliance of the T37058-15-0 does not confer environmental sealing; REACH Unaffected status confirms material compliance but does not address humidity or salt-spray resistance.
Why does the T37058-15-0 specify 12–22 AWG but perform differently at the extremes of that range under sustained 20A loading?
The T37058-15-0 rated current of 20A represents the maximum the connector assembly can withstand thermally; however, 22 AWG copper wire at 20A produces approximately 1.6 watts per 100 feet of conductor length due to I²R losses. If your T37058-15-0 installation includes long cable runs (e.g., >50 feet) at 20A using 22 AWG, the combination of conductor heating and ambient temperature near 105°C can push the actual wire insulation close to its thermal limit, reducing lifespan and increasing failure risk. Conversely, 12 AWG at 20A produces only ~0.2 watts per 100 feet and allows greater thermal margin. For continuous duty on the T37058-15-0, use 12 or 14 AWG when run length exceeds 25 feet; reserve 16–22 AWG for short interconnects or lower current branches (under 10A). The T37058-15-0 screw termination design does not derate based on wire gauge, so the burden of thermal management falls on the design engineer.
Can the T37058-15-0 be used in parallel with other barrier blocks to increase circuit count, and what precautions are necessary?
Multiple T37058-15-0 units can be mechanically mounted side-by-side on a single panel to create a multi-block assembly; however, each T37058-15-0 remains electrically independent. There is no electrical connection between blocks unless the user explicitly wires a common return or ground point. When configuring multiple T37058-15-0 blocks, verify that all incoming power and signal sources share a unified ground reference to prevent ground loops and transient voltage differentials. The 0.375" pitch of individual T37058-15-0 blocks does not inherently provide any cross-block shielding or EMI isolation; if high-speed switching or analog signals are routed through adjacent T37058-15-0 blocks, crosstalk may occur without proper grounding discipline. Document the electrical topology clearly on schematics; a clustered arrangement of multiple T37058-15-0 units is mechanically convenient but electrically requires the same rigor as any parallel connectivity design.
What maintenance or inspection routine is recommended for T37058-15-0 installations operating continuously at or near the 105°C limit?
The T37058-15-0 rated to 105°C does not have a formal maintenance schedule in the datasheet, but field experience in industrial environments suggests periodic inspection at 12–24 month intervals for systems operating continuously near maximum temperature. Visual inspection of the T37058-15-0 should focus on discoloration or embrittlement of the polypropylene housing (yellowing or cracking indicates thermal stress), and physical tightness of all captive-plate screws, as thermal cycling causes micro-relaxation. Check quick-connect receptacles on the T37058-15-0 for oxidation or loose contacts; a light tug on each mated connector should reveal any intermittent fitment. Infrared thermography of a live T37058-15-0 block under full-load conditions can reveal hot-spots indicating internal contact degradation. The UL94 V-0 rating of the T37058-15-0 does not require routine dielectric testing, but if the system experiences electrical surges or lightning events, consider time-domain reflectometry (TDR) to verify conductor continuity within the T37058-15-0.
How do the screw-terminal tolerances and captive-plate design of the T37058-15-0 affect repeatability and rework cycles?
The T37058-15-0 captive-plate screw mechanism is designed for single-pass assembly: the captive plate physically restrains the screw within the block even when fully backed out, preventing loss and ensuring repeatable seating depth across multiple terminations. This design reduces assembly training and minimizes field errors caused by over-torque or under-torque. However, the T37058-15-0 does not specify torque targets in the datasheet; empirical values from Curtis Industries typically range 8–12 in-lb for proper clamping force without stripping the polypropylene threads. Rework of a T37058-15-0 connection requires partial screw removal and re-insertion; repeated cycles (>5 insertions per circuit) can gradually enlarge the polypropylene threads and reduce clamping force. For high-rework applications (e.g., prototype or commissioning environments), consider pre-planning component layout to minimize terminal changes, or budget for T37058-15-0 replacement blocks if extensive field modifications are anticipated.
What are the long-term reliability implications of mixing conductor materials (copper vs. aluminum) in a single T37058-15-0 block?
The T37058-15-0 connector is engineered for copper-to-copper termination via the screw terminals and quick-connect contacts. Terminating aluminum conductors directly to the T37058-15-0 introduces galvanic corrosion risk at the interface; aluminum oxidizes rapidly to an insulating aluminum oxide layer, increasing contact resistance and heat generation under load. If your design requires aluminum conductors (for weight or cost reasons), use a copper crimp adapter at the T37058-15-0 termination point, ensuring the junction is rated for the full 20A circuit. Mixing copper and aluminum within the same T37058-15-0 block is technically possible but creates a two-tier reliability profile: copper circuits remain stable, while aluminum circuits degrade over months to years depending on environmental humidity. Document any aluminum-to-copper transitions in your system schematic and schedule inspection intervals for those specific T37058-15-0 circuits. RoHS3 compliance of the T37058-15-0 does not restrict aluminum use but places responsibility for material compatibility on the system integrator.
How does the single-row configuration of the T37058-15-0 compare to multi-row terminal blocks in terms of electrical performance and design trade-offs?
The T37058-15-0 single-row, 15-circuit layout maximizes operator accessibility and simplifies wire routing compared to stacked multi-row designs (such as two rows of 8 circuits each). The reduced circuit density of the T37058-15-0 increases clearance between adjacent terminals, lowering arc-over risk in high-voltage transient scenarios. However, a single-row T37058-15-0 occupies significantly more horizontal panel space (~5.625" width) than a 2×8 multi-row block (~1.9" width); in space-constrained enclosures, multiple smaller T37058-15-0 units may prove impractical. From an electrical standpoint, the linear arrangement of the T37058-15-0 is preferable for applications where signal integrity is critical (control circuits, instrumentation); the uniform physical separation reduces capacitive coupling and crosstalk compared to tightly nested multi-row designs. The flange-mounting footprint of the T37058-15-0 is not standardized across multi-row competitors, so migration from T37058-15-0 to a higher-density alternative requires mechanical redesign and potential re-qualification.
What is the difference in contact resistance performance between the captive-screw termination and the quick-connect receptacles on the T37058-15-0, and how does this affect circuit voltage drop calculations?
The T37058-15-0 screw termination typically exhibits contact resistance in the 1–3 mΩ range when properly torqued, while the quick-connect receptacles (0.250" tabs) present approximately 2–5 mΩ under nominal insertion force. For a single T37058-15-0 circuit carrying 20A, the cumulative voltage drop across both termination interfaces (screw + quick-connect) may reach ~0.1–0.16V under worst-case combined resistance. In 24V or 48V signal and control circuits, this drop is negligible; in higher-voltage systems (240V, 300V rated), the proportional loss remains <0.1% and is typically masked by supply regulation. However, in precision current-sensing circuits or applications where circuit continuity diagnostics rely on voltage-drop thresholds, the T37058-15-0 contact resistance must be accounted for in the measurement algorithm. If the T37058-15-0 terminations become corroded or partially inserted, contact resistance can spike to 10+ mΩ, introducing unacceptable voltage drop and potential thermal runaway. Specify connector insertion and extraction force limits when procuring mating harnesses to ensure repeatable contact pressure on the T37058-15-0.

Parts with Similar Specifications

The three parts on the right have similar specifications to Curtis Industries T37058-15-0

Product Attribute T37058-19-0 T37058-14-0 T37058-10-0 T37058-11-0
Part Number T37058-19-0 T37058-14-0 T37058-10-0 T37058-11-0
Manufacturer Curtis Industries Curtis Industries Curtis Industries Curtis Industries
Top Termination - - - -
Pitch - - - -
Current Rating (Amps) - - - -
Terminal Screw Finish - - - -
Number of Rows - - - -
Features - - - Simultaneous Sampling
Number of Wire Entries - - - -
Series - - - -
Number of Circuits - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Bottom Termination - - - -
Material Flammability Rating - - - -
Terminal Screw Material - - - -
Color - - - -
Wire Gauge - - - -
Terminal Block Type - - - -
Barrier Type - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Material - Insulation - - - -
Voltage Rating - - - -

T37058-15-0 Datasheet PDF

Download T37058-15-0 pdf datasheets and Curtis Industries documentation for T37058-15-0 - Curtis Industries.

HTML Datasheet
Cylindrical Battery Holders.pdf
Environmental Information
Curtis Industries REACH.pdf

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Curtis Industries

T37058-15-0

Curtis Industries
98D-T37058-15-0

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