RZ03-1A4-D012 TE Connectivity Relay or Contactor (Other) In Stock
TE Connectivity RZ03-1A4-D012 is a SPST-NO electromechanical relay with a 12 VDC coil, rated for 16 A at 250 VAC switching. Designed for power control in industrial automation, HVAC, and home appliance applications. Available from stock with worldwide shipping.
- Manufacturer
- TE Connectivity
- Package
- Other
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- RZ03-1A4-D012 Datasheet PDF
- Category
- Relay or Contactor
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- SPST-NO contact configuration switching up to 16 A at 250 VAC for reliable high-power load control
- 12 VDC coil voltage enables direct drive from standard microcontroller relay driver circuits without additional isolation
- Compact PCB-mount package with 5 mm terminal pitch for straightforward integration into power control board designs
Applications
The RZ03-1A4-D012 is commonly used in HVAC systems, industrial automation panels, and home appliances where a 12 VDC coil-controlled SPST relay must switch 16 A at 250 VAC for motor, heater, or compressor loads. Its robust electromechanical design suits smart home controllers, power distribution boards, and building automation systems requiring dependable high-current AC switching with a low coil power demand.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for RZ03-1A4-D012:
Frequently Asked Questions
What are the coil voltage and contact load ratings of the RZ03-1A4-D012 relay?
The RZ03-1A4-D012 operates with a 12 VDC coil and features SPST-NO contacts rated for 16 A at 250 VAC. This combination makes it suitable for controlling mains-voltage loads such as heating elements, motors, and lighting circuits from low-voltage 12 V control systems.
Can the RZ03-1A4-D012 be driven directly by a microcontroller output?
Typically no — a 12 VDC relay coil requires 40 mA to 80 mA drive current, which exceeds most microcontroller GPIO current limits of 10 mA to 20 mA. A transistor or MOSFET driver stage should be used between the microcontroller output and the 12 VDC coil to reliably energize the relay and switch 16 A at 250 VAC loads.
In which industrial or commercial applications is the RZ03-1A4-D012 relay typically deployed?
The RZ03-1A4-D012 is commonly found in HVAC control boards, industrial machine safety circuits, building automation panels, and home appliance control modules. Its 16 A at 250 VAC contact rating supports controlling compressors, fans, and solenoid valves in systems requiring reliable electromechanical switching over thousands of operational cycles.
How does the RZ03-1A4-D012 compare to solid-state relays for switching 16 A AC loads?
Unlike solid-state relays that generate heat proportional to load current—typically 1 V to 1.5 V voltage drop at 16 A leading to 16 W to 24 W dissipation—the RZ03-1A4-D012 electromechanical relay offers near-zero on-state voltage drop and minimal power loss when closed. However, it has a slower switching speed and limited mechanical cycle life compared to SSRs, making it better suited for low-frequency switching of 250 VAC loads.
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