Introducing ZETTLER Controls’ new 4-pole XMC0 series contactor

PRESS RELEASE Aliso Viejo, California, April 18, 2017 - Zettler Controls extends their line of HVAC/R definite purpose contactors with UL approved 4pole, 25-40 Amp versions. The 4-pole XMC0 25-40 Am... More

New 2-pole 60 Amp Limit Switch

Aliso Viejo, Calif., October 3, 2016 - ZETTLER Controls, Inc. is pleased to announce its competitively priced two pole 60 AMP limit switch is now UL approved, in production, and available for p... More

ZETTLER Controls AZ2800 relays post top-of-the-market 40A rating

Aliso Viejo, CA – August 15th, 2016 – ZETTLER Controls recently unveiled a new 40A contact rating for the AZ2800 series of relays aimed squarely at the burgeoning EVSE marketplace. These double po... More

ZETTLER CONTROLS LINE OF DEFROST THERMOSTATS

ZETTLER Controls is pleased to announce its competitively priced and highly featured line of defrost thermostats is now UL approved and available for purchase.  These defrost thermostats are suitable... More

Thermostats & Temperature Controls

Aliso Viejo, Calif., February 4, 2015 - ZETTLER Controls, Inc. announced today a joint venture with Ningbo Yuanfang Thermostat Co., Ltd. Effective immediately the name of the new venture will be ZETT... More

UEB1-70 Miniature Circuit Breaker

Aliso Viejo, California - Zettler Controls is proud to introduce a new product in its diverse offering of industrial controls, the UEB1-70 Miniature Circuit Breaker. The UEB1-70 is a miniature molded ... More

3ARR Motor Start Potential Relay

Aliso Viejo, California - The 3ARR Series is Zettler Controls, Inc. latest offering in our growing line of products for the HVAC/R industry. This series of potential relays is used to assist in the in... More

Product Announcement: AHRV Class 2 Transformers

Zettler Controls Introduces New, Wider Range of Class II Chassis-Mount Transformers In an ongoing effort to increase competitiveness in the Class II, chassis-count transformer market, Zettler Control... More

XMC0 25 - 90 Amp - Definite Purpose Contactors

Aliso Viejo, California - Zettler Controls extends their line of HVAC/R definite purpose contactors with UL approved 25-90 Amp versions. The XMC0 25-90 Amp contactors are able to switch heavy loads in

 

ZETTLER AC circuit Solar Relays

ZETTLER AC circuit Relays for Solar Inverters < 30 A

AZ733W

This 12 A DPST miniature PCB power relay has been marketed by ZETTLER for 20 years. It is suitable for residential PV inverters up to 3 kVA (single phase) / 8.3 kVA (three phase) and deployments at up to 2000 m above sea level. The relay features a standard pin layout and a relatively small footprint with a contact gap of 1.5 mm.

• Dielectric strength 5000 Vrms
• Isolation spacing greater than 8 mm
• UL, CUR file E44211
• TÜV certificate R50129285

 

AZSR126

This highly efficient 26 A SPST miniature power relay has been on the market since about 10 years and features a wider contact gap of 1.8 mm. It is suitable for residential and small commercial / rooftop PV systems of up to 6.5 kVA (single phase) / 18 kVA (three phase) and deployment levels of up to 3000 m above sea level.

• Dielectric strength 4500 Vrms
• Clearance / creepage > 6.4 / 7.5 mm
• UL, CUR file E44211

 

ZETTLER AC circuit Relays for Solar Inverters ≥ 30 A

AZ2150W

This 30 A SPST high power PCB relay is a modified version of a reliable relay which is about 30 years in the market. With its standard pin layout it is suitable for PV inverter applications of up to 7.5 kVA (single phase) / 21 kVA (three phase) and deployment levels of up to 3000 m above sea level, in residential and smaller commercial / roof-top solar systems.

• 1.75 mm contact gap
• High dielectric strength 4000 Vrms contact to coil
• All plastics PTI 250
• UL, CUR file E44211
• VDE certificate 40023154

 

AZ2704

This 30 A DPST high power PCB relay is suitable for PV inverter applications of up to 7.5 kVA (single phase) / 21 kVA (three phase) and deployment levels of up to 7000 m (5000 m standard contact gap version) above sea level, in residential and smaller commercial / roof-top solar systems.

• 30 A AC7a approved
• 900 A short circuit current (carrying)
• Dielectric strength 4000 Vrms
• Standard (2.4 mm) or wide contact gap (3.0 mm) available
• UL, CUR file E44211
• TÜV certificate R50164753

 

AZSR131

This highly efficient 35 A SPST miniature power relay is the result of consequent further development for higher requirements and features a wider contact gap of 2.3 mm. It is suitable for residential and small commercial / rooftop PV systems of up to 9 kVA (single phase) / 24 kVA (three phase) and deployment levels of up to 5000 m  (3000 m standard contact gap version) above sea level.

• Dielectric strength 4500 Vrms
• Standard (1.8 mm) or wide contact gap (2.3 mm) available
• Clearance / creepage > 6.4 / 7.5 mm
• EN 60335-1 (GWT) approved version available
• UL, CUR file E365652
• TÜV certificate B170488793005

 

AZSR235

This 35 A DPST high power PCB relay is part of the first group of Zettler relays that were specifically developed for solar applications and has been deployed in many PV inverters since eight years. It is suitable for larger residential and small to medium commercial / rooftop PV systems up to 9 kVA (single phase) / 24 kVA (three phase), features a wide contact gap of > 2.05 mm making it suitable for deployment levels of up to 4000 m above sea level.

• Wide contact gap > 2.05mm
• Very low holding power <100 mW
• Dielectric strength 5000 Vrms
• Isolation spacing greater than 10 mm
• Reinforced insulation, EN 60730-1 (VDE 0631, part 1), EN 60335-1 (VDE 0700, part 1)
• UL, CUR file E44211
• VDE certificate 40033251

 

ZETTLER AC circuit Relays for Solar Inverters ≥ 50 A

AZSR250

A sibling to the AZSR235, this 50 A DPST high power PCB relay is designed for deployment in solar inverters of up to 12.5 kVA (single phase) / 35 kVA (three phase) – suitable for larger residential and midsize commercial PV systems, deployable at up to 3000 m above sea level. Key features of this relay are its very low holding power and a small footprint of just 10 cm2.

• Wide contact gap > 1.85mm
• Holding power <100 mW
• Dielectric strength 5000 Vrms
• Isolation spacing greater than 10 mm
• Reinforced insulation, EN 60730-1 (VDE 0631, part 1), EN 60335-1 (VDE 0700, part 1)
• UL, CUR file E44211
• VDE certificate 40033251

 

AZSR165

Scheduled for mass production in 2017, this 65 A relay is the economy version of the new AZSR190 series. Developed for PV applications of up to 18 kVA (single phase) / 45 kVA (three phase) this relay is well suited for medium sized to larger roof top based / commercial systems, deployable up to 7000 m above sea level.

• Wide contact gap > 3.0 mm (3.6 mm upon request)
• Dielectric strength 5000 Vrms
• Isolation spacing greater than 10 mm
• UL, CUR E365652
• TÜV certificate B170988793008

 

AZSR180

The 80 A high power PCB relay takes the AZSR235/250 series to the next logical level. Developed for PV applications of up to 20 kVA (single phase) / 55 kVA (three phase) this relay is well suited for medium sized to larger roof top based / commercial systems, deployable up to 4000 m above sea level. It features a patent pending Thermal Bridge, designed to protect the parallel contacts from overheating as a result of uneven distribution of currents.

• Wide contact gap > 2.05mm
• Very low holding power <100 mW
• Dielectric strength 5000 Vrms
• Isolation spacing greater than 10 mm
• Reinforced insulation, EN 60730-1 (VDE 0631, part 1), EN 60335-1 (VDE 0700, part 1)
• UL, CUR file E44211
• VDE certificate 40044305

 

AZSR190

Scheduled for mass production in 2017, this 90 A standard version / 100 A “H”-version high power PCB relay will close the gap between AZSR180 and AZSR1120. Developed for PV applications of up to 25 kVA (single phase) / 69 kVA (three phase) this relay is well suited for medium sized to larger roof top based / commercial systems, deployable up to 8000 m above sea level.

• Wide contact gap > 3.6mm
• Dielectric strength 5000 Vrms
• Isolation spacing greater than 10 mm
• UL, CUR E365652
• TÜV certificate B170988793008

 

ZETTLER AC circuit Relays for Solar Inverters ≥ 100 A

AZSR1120

New Development

This 120 A extreme high power PCB Relay has been designed for PV applications of up to 30 kVA (single phase) / 83 kVA (three phase) – a highly attractive, small footprint substitute for conventional contactors. This relay is suitable for larger commercial / rooftop based PV systems and small commercial solar fields, deployable up to 5000 m above sea level.

• Wide contact gap > 2.3mm
• Holding power <300 mW
• Dielectric strength 5000 Vrms
• Isolation spacing greater than 8 mm
• UL, CUR file anticipated
• VDE certificate anticipated

 

AZSR1200

New Development

This 200 A extreme high power PCB relay is designed for 50 kVA (single phase) / 138 kVA (three phase) solar systems suitable for large roof top based commercial systems and small commercial solar fields, deployable up to 10000 m above sea level, another highly cost attractive, small footprint substitute for conventional contactors.

• Wide contact gap > 4.6mm
• Holding power <0.6 W
• Dielectric strength 5000 Vrms
• Isolation spacing greater than 8 mm
• UL, CUR anticipated
• VDE anticipated

 

ZETTLER Relay for Insulation Measuring in Solar Applications

AZ742-2A-xxD(200)

As photovoltaic installations with transformerless solar inverters are not galvanically isolated, permanent measuring of the insulation is not possible when in operating mode, i.e. feeding energy into the grid. However, current safety standards for solar inverters and solar panels require that only systems with correct insulation can be grid -connected. Common switching components to connect the insulation measuring circuit with the inverter usually come in the form of relative expensive reed relays. ZETTLER’s solution is a modified and very cost effective two-pole electromechanical relay meeting necessary standards.

• Widened contact gap > 0.6 mm
• Dielectric strength between open contacts 2000 Vrms for 60 sec.
• Isolation spacing greater than 10 mm
• Test conditions
  • Configuration: two contacts connected in series
  • Load: resistive 1000 VDC / 15.3 mA
  • Ambient temperature: 85°C
  • Duty cycle: 1.5 s On / 1.5 s Off
  • Electrical lifetime: 30k cycles
• UL, CUR file E43203
• VDE certificate 40012572