行业组件数据 · 2026

端子排

Terminal blocks are modular, insulated connectors that secure and organize electrical wires in industrial control panels and HMI interfaces.

技术定义与适配语境
典型 端子排 会按材料、尺寸公差、适配关系和失效风险在 电气设备制造 中评估。

Terminal blocks are electromechanical components used to connect multiple electrical wires in a secure, organized manner within control panels, particularly in Human-Machine Interface (HMI) systems. They consist of an insulating body (typically plastic) and conductive metal terminals (often copper alloys) that clamp wires using screw, spring, or push-in mechanisms. In HMI interfaces, they serve as central connection points between the HMI controller, sensors, actuators, and other field devices, enabling reliable signal transmission, power distribution, and easy maintenance without soldering.

组件规格

定义
Terminal blocks are electromechanical components used to connect multiple electrical wires in a secure, organized manner within control panels, particularly in Human-Machine Interface (HMI) systems. They consist of an insulating body (typically plastic) and conductive metal terminals (often copper alloys) that clamp wires using screw, spring, or push-in mechanisms. In HMI interfaces, they serve as central connection points between the HMI controller, sensors, actuators, and other field devices, enabling reliable signal transmission, power distribution, and easy maintenance without soldering.
工作原理
Terminal blocks operate by providing a mechanical clamping force (via screws, springs, or levers) to hold stripped wire ends against a conductive metal terminal, creating a low-resistance electrical connection. The insulating body prevents short circuits and electrical shock. In HMI systems, they facilitate the termination of control signals (e.g., digital I/O, analog signals) and power lines, allowing for modular wiring, testing, and replacement of components without disrupting the entire system.
材料
Insulating body: Polyamide (PA66)polycarbonate (PC)or thermoset plastics (UL94 V-0 rated for flame resistance). Conductive terminals: Copper alloys (e.g.brassphosphor bronze) with tinsilveror nickel plating for corrosion resistance and conductivity. Clamping elements: Steel screws or spring-loaded contacts.
Pitch
2.5 mm to 10.16 mm (0.1" to 0.4")
Mounting
DIN rail (TS35/TS32), panel mount, or PCB mount
IP Rating
IP20 (standard) to IP67 (protected)
Wire Size
0.08 mm² to 300 mm² (AWG 28 to 500 MCM)
Current Rating
5A to 300A
Voltage Rating
Up to 600V AC/DC
Temperature Range
-40°C to +120°C
标准
IEC 60947-7-1UL 1059DIN 46277

行业分类与别名

端子排 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Insufficient torque on screw terminals->High contact resistance, overheating, and potential fire hazard->Use torque screwdrivers, follow manufacturer specifications, and implement periodic inspection schedules
Vibration in machinery->Screws loosening over time, leading to intermittent connections->Use spring-cage terminals, vibration-resistant designs, or apply thread-locking compounds
Exposure to corrosive chemicals or moisture->Terminal corrosion, increased resistance, and connection failure->Select plated terminals (e.g., nickel or tin), use IP-rated enclosures, or apply protective coatings

工业生态与工程逻辑

0
Loose connections causing overheating or arcing
1
Incorrect wire sizing leading to overload
2
Corrosion in humid environments
3
Miswiring due to poor labeling

合规与检测

tolerance
Terminal pitch tolerance: ±0.1 mm; current rating must not exceed 80% of nominal value for continuous operation
test method
Testing per IEC 60512 for electrical continuity, dielectric strength (hipot testing), and mechanical durability (insertion/withdrawal cycles)

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What are the main types of terminal blocks used in HMI interfaces?

Common types include screw terminals (for secure connections), spring-cage terminals (for tool-free installation), push-in terminals (for fast wiring), and pluggable terminals (for modular disconnection). Barrier strips and feed-through blocks are also used for power distribution.

How do terminal blocks improve HMI system maintenance?

They allow individual wires to be disconnected without affecting others, enabling easy troubleshooting, component replacement, and system modifications. Marking strips and color-coding further aid organization.

What safety standards apply to terminal blocks in industrial settings?

Key standards include IEC 60947-7-1 for low-voltage switchgear, UL 1059 for safety in North America, and DIN 46277 for dimensional compatibility. Flame resistance (UL94) and IP ratings for ingress protection are also critical.

我可以直接联系工厂吗?

CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。

CNFX Industrial Component Index · 电气设备制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

请求制造能力信息: 端子排

说明目标数量、应用场景、交期和关键技术要求,用于准备 RFQ 或供应商评估。

谢谢,信息已发送。
谢谢,信息已收到。

需要制造 端子排?

对比具备该组件加工或装配能力的制造商资料。

创建制造商档案 联系我们
上一个组件
端子引脚
下一个组件
端子排/汇流排
URN:CNFX:ME:UNIT:TERMINAL_BLOCKS