# Certificate of Compliance

**Certificate:** 80143537  
**Master Contract:** 302773  
**Project:** 80143537  
**Date Issued:** 2024-04-02  
**Issued To:** Lunar Energy  
**755 Ravendale Drive**  
**Mountain View, California, 94043**  
**United States**  
**Attention:** Jason Haer

***The products listed below are eligible to bear the CSA Mark shown with***  
***adjacent indicators 'C' and 'US' for Canada and US or with adjacent***  
***indicator 'US' for US only or without either indicator for Canada only.***

*Peter Lim*  
**Issued by:**  
*Peter Lim*

## PRODUCTS

CLASS 5311 09 POWER SUPPLIES - Distributed Generation Power Systems Equipment  
CLASS 5311 89 POWER SUPPLIES - Distributed Generation Power Systems Equipment- Certified to U.S.  
Standards

PV Combiner Box with Wireless Communication Device.

Model: Lunar Maximizer Hub

<u>Electrical Ratings:</u>

Maximum Rated Operating Voltage: 450V DC  
Rated Maximum Current Per Terminal: 40ADC.  
Max input current(dc) per PV String: 16A  
Rated No. of Terminal: 3 Positive 3 Negative, 1 Ground  
Maximum Ambient (°C): -40° to 85°C

$$
(^{0}!\!):40^{0circ}
$$

$$
85^{\circ}\mathbf{C}
$$

---

**Master Contract:** 302773  
**Date Issued:** 2024-04-02**

Enclosure Ratings: Polymeric, NEMA Type 3R  
Elevation: 3000m (9843ft)  
RH: 100%  
OVC II, Pollution Degree 1  
Maximum Short-Circuit Current Rating (SCCR): 20A Per input feed.  
Maximum Sum of the short circuit current (SCCR): 50A  
Maximum Overcurrent Protection rating: 16A per feed (located at the Maximizer, 50A breaker located at the  
ESS)

Enclosure Type: 3R

## Conditions of Acceptability:

(1) The Maximizer Hub shall be installed only with Lunar Maximizers and Lunar Inverters.

(2) Total output current shall not exceed 50A (dc) Max.

(3) Upstream protection provided by Lunar Maximizer and output overcurrent protection and disconnect are  
provided by Lunar Inverter.

(4) Drain openings must meet the CSA C22.2 94.2 and UL50E openings requirement outlined for Type 3R  
enclosure.

(5) Up to a maximum of 3 strings can be connected to a single Maximizer Hub.

(6) To be used only with Lunar Maximizer and Inverter listed under 80136899 and 80121274 respectively.

(7) Watertight compression connector and water resistance gland must be used for conduit connection.

(8) Conduits for input and output cabling shall be mounted on either side or both sides and not on the top or the  
bottom of the enclosure.

(9) Electromagnetic immunity to be evaluated in the end system.

(10) Conduit and Cable Entry to be evaluated in the end installation (Refer to installation manual).

(11) The Max Input Current per terminal is labeled as 40A. However, in the Lunar System the Max current per  
PV String is 16A and three of such strings can be connected in parallel contributing to the combined string  
with Max output of Maximizer Hub of 37.5A which is an Input to the Lunar Inverter.

(12) Max input current(dc) per PV String shall be 16A which is limited by Maximizer.

## APPLICABLE REQUIREMENTS

CSA C22.2 No. 290:19 (R2021)-Photovoltaic Combiners and Recombiners  
UL 1741  
CSA C22.2 No. 107.1: 2016 -Power conversion equipment  
UL 1741 CRD  
-Inverters, Converters, Controllers and Interconnection System Equipment  
for Use with Distributed Energy Resources (Third Edition, Revision Dated  
May 19, 2023)

-PV Input Circuit Combiners and PV Combiner Boxes (Dated June 10,  
2011)

---

**Certificate:** 80143537  
**Project:** 80143537  
**Master Contract:** 302773  
**Date Issued:** 2024-04-02

## Notes:

Products certified under Class C531109 have been certified under CSA’s ISO/IEC 17065  
accreditation with the Standards Council of Canada (SCC). www.scc.ca

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# Supplement to Certificate of Compliance

**Certificate:** 80143537  
**Master Contract:** 302773

***The products listed, including the latest revision described below,***  
***are eligible to be marked in accordance with the referenced Certificate.***

## Product Certification History

| Project | Date | Description |  
| --- | --- | --- |  
| 80143537 | 2024-04-02 | To perform Testing/Certification for Lunar&#x27;s Combiner box evaluation(C/US). |