
Model MSE
Shipboard Electric Water Heater
6-119 Gallon Capacity, up to 58 KW, Single or Three Phase
The Hubbell Model MSE water heater is specifically designed for marine use and is in conformance with USCG and is ABS Type Approved. By utilizing deck and removable bulkhead mounting supports, the water heater is securely fastened to the ship structure, thus providing a secure and reliable water heater installation. To ensure tank longevity, the high quality tank is constructed of steel and internally lined with specially formulated hydrastone cement. The Hydrastone Cement lining, along with solid copper-silicon threaded tank openings and a built-in heat trap device, all ensure a longer lasting, energy efficient water heater that is resistant to the highly corrosive effects of hot water.
When you specify and install a Hubbell model MSE, knowing that it is in conformance with USCG regulations and ABS Type Approved, you will have confidence that the ship owner will be provided with a long lasting, trouble-free source for hot water.

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Heavy Duty Construction
- Hydrastone cement lining provides longer tank life
- Copper-silicon alloy tappings cannot rust or corrode
- High impact composite jacket cannot rust or corrode and eliminates damage during installation and transit
Marine Approvals
- United States Coast Guard (USCG) conformance and American Bureau of Shipping (ABS) Type Approved
- USCG conformance and ABS Type Approval eliminates costly delays and uncertainties during ship inspection
Wide Selection
- Built to meet your exact needs
- Numerous options available for specialized applications
Mounting Systems
- Heavy duty legs secure the tank to deck
- Removable side-sway bulkhead attachment points provide added mounting integrity
- The entire mounting system is integrally welded to tank for maximum stability and safety
High Efficiency
- 2" thick polyurethane foam insulation reduces heat loss
- Built-in heat trap lowers operating costs
Reliable
- Full five (5) year Non Pro-rated tank warranty is standard
- Full ten (10) year Non Pro-rated tank warranty can be specified for extended protection
Model MSE Water Heater Specifications
Below 45 KW: 3/4" Female NPT
45 KW and over: 1 1/2" Male NPT
Below 45 KW: 3/4" Male NPT
45 KW and over: 1 1/2" Male NPT
Surface: 110-170°F
Immersion: 100-190°F
Standard: 5 Year Non Pro-Rated
Optional: 10 Year Non Pro-Rated
General Specifications
- 1/2" thick Hydrastone cement lining
- Removable bulkhead attachment points
- Heavy-duty integrally welded leg supports for deck mounting
- Non-ferrous solid copper-silicon threaded openings for maximum corrosion resistance
- Magnetic contactor(s) are heavy duty resistive load type rated for 200,000 cycles
- Low voltage control circuit (fused) transformer (units over 240 volt)
- Power circuit fuse protection (units over 48 amp)
- Incoloy sheathed immersion heating elements
- Built-in heat trap to improve operating efficiency (3/4" only)
- Surface thermostat 110-170°F range
- Immersion thermostat (100-190°F) furnished as standard when required due to high recovery versus storage ratio.
On 6-30 gallon heaters over 5 KW
On 40 and 50 gallon heaters over 8 KW
On 65 gallon heaters over 12 KW
On 80-119 gallon heaters over 15 KW - Surface safety hi-limit cut out with manual reset button (190°F)
- Immersion safety hi-limit cut out with manual reset button (Standard on heaters 45 KW and above)
- ASME rated temperature and pressure relief valve set at 100 psi, 210°F
- 2" thick polyurethane foam insulation
- High impact non-corroding colorized composite protective jacket
- Cold water inlet diffuser with drain valve
Outline Dimensions

Model MSE Dimensional Data
Storage Capacity (Gallons) | Base Model Number | Maximum KW Input | Dimensions (Inches) | Shipping Weight (lbs.) | |||||
---|---|---|---|---|---|---|---|---|---|
Overall Diameter | Overall Height | Deck to Inlet "A" | Deck to T&P "B" | Bulkhead Mounting Dimension "C" | Bolt Circle "D" | ||||
6 | MSE06 | 3 | 15 | 17.5 | 5 | 12.5 | None | None | 120 |
10 | MSE10 | 10 | 20 | 27 | 13 | 21 | None | 13 | 155 |
19 | MSE20 | 10 | 20 | 39 | 13 | 33 | None | 13 | 195 |
30 | MSE30 | 15 | 20 | 47.5 | 13 | 40 | 12 | 13 | 225 |
40 | MSE40 | 15 | 20 | 64.75 | 13 | 57 | 12 | 13 | 315 |
50 | MSE50 | 58 | 22.75 | 57 | 13 | 49 | 12 | 15 | 330 |
65 | MSE65 | 58 | 26 | 54 | 14 | 46 | 12 | 18 | 395 |
80 | MSE80 | 58 | 26 | 64 | 14 | 57 | 12 | 18 | 430 |
100 | MSE100 | 58 | 26 | 75.5 | 14 | 68 | 12 | 18 | 460 |
119 | MSE120 | 58 | 28 | 75.25 | 14 | 68 | 12 | 20 | 510 |
40 | MSEU40 | 58 | 26 | 39 | 13 | 30 | None | 18 | 320 |
Formulas To Solve For:
Recovery
GPH x _____________ °F ΔT x 0.00244 = KWKW x 410 ÷ GPH = ____________ °F ΔT
KW x 410 ÷ __________ °F ΔT = GPH
Note: 1 KW will heat 4.1 GPH at a 100°F ΔT
Electrical
((KW x 1000) ÷ Volts) ÷ 1.73 = Amps 3 Φ(KW x 1000) ÷ Volts = Amps 1 Φ
KW | BTU/HR |
Gallons Per Hour Heated At Various Temperature Rises |
Amperage Ratings At Various Voltages | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Single Phase | Three Phase | ||||||||||||
60 °F Δ | 80 °F Δ | 100 °F Δ | 208V | 240V | 480V | 208V | 240V | 380V | 415V | 440V | 480V | ||
3 | 10,236 | 21 | 15 | 12 | 14 | 13 | 6 | 8 | 7 | 5 | 4 | 4 | 4 |
4 | 13,648 | 27 | 21 | 16 | 19 | 17 | 8 | 11 | 10 | 6 | 6 | 5 | 5 |
6 | 20,472 | 41 | 31 | 25 | 29 | 25 | 13 | 17 | 15 | 9 | 8 | 8 | 7 |
8 | 27,296 | 55 | 41 | 33 | 39 | 33 | 17 | 22 | 19 | 12 | 11 | 11 | 10 |
10 | 34,120 | 68 | 51 | 41 | 48 | 42 | 21 | 28 | 24 | 15 | 14 | 13 | 12 |
12 | 40,944 | 82 | 62 | 49 | 58 | 50 | 25 | 33 | 29 | 18 | 17 | 16 | 15 |
15 | 51,180 | 103 | 77 | 62 | 72 | 63 | 31 | 42 | 36 | 23 | 21 | 20 | 18 |
18 | 61,416 | 123 | 92 | 74 | 87 | 75 | 38 | 50 | 43 | 27 | 25 | 24 | 22 |
20 | 68,240 | 137 | 103 | 82 | 96 | 83 | 42 | 56 | 48 | 30 | 28 | 26 | 24 |
24 | 81,888 | 164 | 123 | 98 | 115 | 100 | 50 | 67 | 58 | 37 | 33 | 32 | 29 |
30 | 102,360 | 205 | 154 | 123 | 144 | 125 | 63 | 83 | 72 | 46 | 42 | 39 | 36 |
36 | 122,832 | 246 | 185 | 148 | 173 | 150 | 75 | 100 | 87 | 55 | 50 | 47 | 43 |
40 | 136,480 | 273 | 205 | 164 | 192 | 167 | 83 | 111 | 96 | 61 | 56 | 53 | 48 |
45 | 153,540 | 308 | 231 | 185 | 216 | 188 | 94 | 125 | 108 | 69 | 63 | 59 | 54 |
50 | 170,600 | 342 | 256 | 205 | 240 | 208 | 104 | 139 | 120 | 76 | 70 | 66 | 60 |
54 | 184,248 | 369 | 277 | 221 | 260 | 225 | 113 | 150 | 130 | 82 | 75 | 71 | 65 |
58 | 197,896 | 396 | 297 | 238 | 279 | 242 | 121 | 161 | 140 | 88 | 81 | 76 | 70 |
1. The KW selections above are shown for convenience. A full selection of KW ratings from 1 to 58 KW is available
by simply entering the desired KW into the model number.
2. Units 45 KW and over are supplied with 1 1/2" Male NPT inlet/outlet connections and immersion hi-limit.
3. Alternate voltages including 220, 230, 460, 575 and 600 volt are available. Please contact us directly.
Optional Equipment
- Full 10 Year Non Pro-Rated tank warranty
- Control circuit (fused) transformer. (Standard on units over 240V)
- Electronic low water cut off
- Power circuit fuse protection
- Immersion thermostat (specify 100-190°F or 30-110°F Range)
- Immersion adjustable (100-240°F) safety hi-limit cut out with manual reset
- Solid Type 304 or 316L stainless steel tank, 90/10 copper nickel alloy tank
- 1 1/2" Male NPT brass inlet and outlet water connections (heat trap not available)
- 2" Male NPT brass inlet and outlet water connections (heat trap not available)
- Special connection size/type
- Combination temperature and pressure gauge: 2 1/2" dial, 30-240°F, 0-200 psi - factory installed in tank
- Built-in circuit breaker, specify with or without shunt trip protection
- Built-in non-fused On/Off disconnect switch
- Electro-mechanical 7-day time clock wtih battery back-up
- Horizontal construction
- NEMA 4 weather resistant construction for installation in outdoor/wet areas
- Explosion resistant enclosures for hazardous locations
- Secondary heating capability provided by a tank inserted heat exchanger constructed from single wall (Optional: double wall) copper fin tube
- Additional ground connections
- Alternate working pressure available
Please note: optional equipment may impact overall dimensions and weight. Please request submittal drawing from factory.
Model Number Designation MSE
Model:
MSE
Storage Capacity:
6-119 U.S. Gallons

Upper KW:
Element bank
0 - 58 KW
(typically 0) Not
available in 6,
10, 19 Gallon
capacity heaters

Lower KW:
Element bank
1 - 58 KW
Tank:
SL = Hydrastone Cement
lined tank
SS = Solid stainless
steel tank
CN = Solid 90/10
copper-nickel tank
Voltage/Phase/Hz:
RS = 208-1-60
R = 208-3-60
S = 240-1-60
T = 240-3-60
W = 277-1-60
T3 = 380-3-50/60
T7 = 415-3-50/60
T5 = 440-3-60
T4 = 480-3-60
T4S = 480-1-60
T6 = 600-3-60
Example:
MSE120 - 0 - 45SLT4
Hubbell model MSE marine water heater with a storage capacity of 119 Gallons with 45 KW in the lower element bank. Storage tank is lined with Hydrastone cement and the electrical controls operate at 480 V, 3 phase, 60 Hz power.
Downloads
Technical Documents
- Model MSE Brochure PDF (1.8 MB)
- Model MSE Written Spec PDF (755 KB)
- Model MSE Written Spec DOC (27.0 KB)
- Model MSE O&M Manual PDF (1.6 MB)
- Model MSE ABS Approval Certificate PDF (273 KB)
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