Product Details Introduction
12HFA51A42H Auxiliary Relay Product Features
12HFA51A42H is a high-performance industrial auxiliary relay with advantages such as stability, reliability, fast response, and strong adaptability. It is widely used in electrical control, relay protection, and automation systems.
Adopting industrial grade design, stable structure, high long-term operational reliability, meeting the requirements of industrial control and power system use.
The contact capacity is sufficient, the on-off capability is strong, and it can stably carry the conventional load current in the control circuit.
Fast response speed, accurate suction and release, ensuring timely transmission of control signals.
Using high-quality alloy contacts, with low contact resistance, arc resistance, oxidation resistance, and long service life.
The coil has low power consumption, minimal heat generation, and is suitable for long-term operation with electricity. It is energy-saving and highly safe.
Has good anti-interference performance and can work stably without misoperation in complex electromagnetic environments.
Excellent insulation performance, electrical clearance and creepage distance meet standards, ensuring safe circuit isolation.
High mechanical strength, resistant to vibration and impact, suitable for various harsh industrial site environments.
Standard installation method, compatible with conventional control cabinets and relay protection devices, easy to install.
Moderate volume, reasonable layout, easy to install multiple units densely, saving cabinet space.
Wide working temperature range, suitable for high and low temperature environments, stable operation without failure.
Clear actions and clear states facilitate on-site observation and troubleshooting.
Strong compatibility, compatible with contactors PLC、 Use protective devices and other equipment in conjunction.
Equipped with multiple safety designs, effectively preventing contact adhesion and misoperation risks.
Widely applicable scenarios, covering multiple industries such as power, metallurgy, petrochemicals, manufacturing, and rail transit.
The 12HFA51A42H auxiliary relay, with its reliable performance, stable structure, and long lifespan, has become an important supporting component in industrial control circuits, effectively improving the safety and stability of system operation.

ontroller Module
REXROTH VM310 Transformer
BENTLY 3500/40 176449-01 Isolation Amplification Module
Honeywell FC-SDI-1624 Digital Input Module
Other website links
EMERSON 0022E51FB6DA KJ2005X1-BK1输入输出模块
EMERSON SE3007 12P4688X032输入输出模块
8851-LC-MT数字输入输出模块
| SR3624-8291-7-56BC-CU | AMAT 0100-00669 | PFEA 113-65.2PXC |
| SR3624-8291-48B | AMAT 0100-02134 | PFEA 112, IP 65 |
| SR3624-4991 | AMAT 0100-02888 | PFEA 113, IP 20 |
| SR3624-4308-7-48C | AMAT 0100-09042 | PFEA 113-20 |
| SR3624-1032-84-7-56HC-CU | AMAT 0100-76303 | 48980001-PC DSSR170 ABB |
| SR3624-1032-7-56BC-CU | AMAT 0100-35212 | 57120001-ET DSTA180 ABB |
| SR3616-8290-7-56C | AMAT 0100-71172 | PFEA 111-65 |